Make fetch also fetch artist MBID if it is missing (#201)

Closes #191

Reviewed-on: #201

Cargo.lock

@@ -645,6 +645,7 @@ dependencies = [
  "mockall",
  "once_cell",
  "openssh",
+ "paste",
  "ratatui",
  "reqwest",
  "serde",
@@ -812,9 +813,9 @@ dependencies = [
 
 [[package]]
 name = "paste"
-version = "1.0.14"
+version = "1.0.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "de3145af08024dea9fa9914f381a17b8fc6034dfb00f3a84013f7ff43f29ed4c"
+checksum = "57c0d7b74b563b49d38dae00a0c37d4d6de9b432382b2892f0574ddcae73fd0a"
 
 [[package]]
 name = "percent-encoding"

Cargo.toml

@@ -10,6 +10,7 @@ aho-corasick = { version = "1.1.2", optional = true }
 crossterm = { version = "0.27.0", optional = true}
 once_cell = { version = "1.19.0", optional = true}
 openssh = { version = "0.10.3", features = ["native-mux"], default-features = false, optional = true}
+paste = { version = "1.0.15", optional = true }
 ratatui = { version = "0.26.0", optional = true}
 reqwest = { version = "0.11.25", features = ["blocking", "json"], optional = true }
 serde = { version = "1.0.196", features = ["derive"], optional = true }
@@ -33,7 +34,7 @@ bin = ["structopt"]
 database-json = ["serde", "serde_json"]
 library-beets = []
 library-beets-ssh = ["openssh", "tokio"]
-musicbrainz = ["reqwest", "serde", "serde_json"]
+musicbrainz = ["paste", "reqwest", "serde", "serde_json"]
 tui = ["aho-corasick", "crossterm", "once_cell", "ratatui"]
 
 [[bin]]
@@ -50,8 +51,8 @@ path = "examples/musicbrainz_api/lookup_artist.rs"
 required-features = ["bin", "musicbrainz"]
 
 [[example]]
-name = "musicbrainz-api---search-release-group"
+name = "musicbrainz-api---search"
-path = "examples/musicbrainz_api/search_release_group.rs"
+path = "examples/musicbrainz_api/search.rs"
 required-features = ["bin", "musicbrainz"]
 
 [package.metadata.docs.rs]

examples/musicbrainz_api/search.rs

@@ -0,0 +1,150 @@
+#![allow(non_snake_case)]
+
+use std::{num::ParseIntError, str::FromStr};
+
+use musichoard::{
+    collection::{album::AlbumDate, musicbrainz::Mbid},
+    external::musicbrainz::{
+        api::{
+            search::{SearchArtistRequest, SearchReleaseGroupRequest},
+            MusicBrainzClient,
+        },
+        http::MusicBrainzHttp,
+    },
+};
+use structopt::StructOpt;
+use uuid::Uuid;
+
+const USER_AGENT: &str = concat!(
+    "MusicHoard---examples---musicbrainz-api---search/",
+    env!("CARGO_PKG_VERSION"),
+    " ( musichoard@thenineworlds.net )"
+);
+
+#[derive(StructOpt)]
+struct Opt {
+    #[structopt(subcommand)]
+    entity: OptEntity,
+}
+
+#[derive(StructOpt)]
+enum OptEntity {
+    #[structopt(about = "Search artist")]
+    Artist(OptArtist),
+    #[structopt(about = "Search release group")]
+    ReleaseGroup(OptReleaseGroup),
+}
+
+#[derive(StructOpt)]
+struct OptArtist {
+    #[structopt(help = "Artist search string")]
+    string: String,
+}
+
+#[derive(StructOpt)]
+enum OptReleaseGroup {
+    #[structopt(about = "Search by artist MBID, title(, and date)")]
+    Title(OptReleaseGroupTitle),
+    #[structopt(about = "Search by release group MBID")]
+    Rgid(OptReleaseGroupRgid),
+}
+
+#[derive(StructOpt)]
+struct OptReleaseGroupTitle {
+    #[structopt(help = "Release group's artist MBID")]
+    arid: Uuid,
+
+    #[structopt(help = "Release group title")]
+    title: String,
+
+    #[structopt(help = "Release group release date")]
+    date: Option<Date>,
+}
+
+#[derive(StructOpt)]
+struct OptReleaseGroupRgid {
+    #[structopt(help = "Release group MBID")]
+    rgid: Uuid,
+}
+
+struct Date(AlbumDate);
+
+impl FromStr for Date {
+    type Err = ParseIntError;
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        let mut elems = s.split('-');
+
+        let elem = elems.next();
+        let year = elem.map(|s| s.parse()).transpose()?;
+
+        let elem = elems.next();
+        let month = elem.map(|s| s.parse()).transpose()?;
+
+        let elem = elems.next();
+        let day = elem.map(|s| s.parse()).transpose()?;
+
+        Ok(Date(AlbumDate::new(year, month, day)))
+    }
+}
+
+impl From<Date> for AlbumDate {
+    fn from(value: Date) -> Self {
+        value.0
+    }
+}
+
+fn main() {
+    let opt = Opt::from_args();
+
+    println!("USER_AGENT: {USER_AGENT}");
+
+    let http = MusicBrainzHttp::new(USER_AGENT).expect("failed to create API client");
+    let mut client = MusicBrainzClient::new(http);
+
+    match opt.entity {
+        OptEntity::Artist(opt_artist) => {
+            let query = SearchArtistRequest::new().string(&opt_artist.string);
+
+            println!("Query: {query}");
+
+            let matches = client
+                .search_artist(query)
+                .expect("failed to make API call");
+
+            println!("{matches:#?}");
+        }
+        OptEntity::ReleaseGroup(opt_release_group) => {
+            let arid: Mbid;
+            let date: AlbumDate;
+            let title: String;
+            let rgid: Mbid;
+
+            let query = match opt_release_group {
+                OptReleaseGroup::Title(opt_title) => {
+                    arid = opt_title.arid.into();
+                    date = opt_title.date.map(Into::into).unwrap_or_default();
+                    title = opt_title.title;
+                    SearchReleaseGroupRequest::new()
+                        .arid(&arid)
+                        .and()
+                        .release_group(&title)
+                        .and()
+                        .first_release_date(&date)
+                }
+                OptReleaseGroup::Rgid(opt_rgid) => {
+                    rgid = opt_rgid.rgid.into();
+                    SearchReleaseGroupRequest::new().rgid(&rgid)
+                }
+            };
+
+            println!("Query: {query}");
+
+            let matches = client
+                .search_release_group(query)
+                .expect("failed to make API call");
+
+            println!("{matches:#?}");
+        }
+    }
+}

examples/musicbrainz_api/search_release_group.rs

@@ -1,114 +0,0 @@
-#![allow(non_snake_case)]
-
-use std::{num::ParseIntError, str::FromStr};
-
-use musichoard::{
-    collection::{album::AlbumDate, musicbrainz::Mbid},
-    external::musicbrainz::{
-        api::{search::SearchReleaseGroupRequest, MusicBrainzClient},
-        http::MusicBrainzHttp,
-    },
-};
-use structopt::StructOpt;
-use uuid::Uuid;
-
-const USER_AGENT: &str = concat!(
-    "MusicHoard---examples---musicbrainz-api---search-release-group/",
-    env!("CARGO_PKG_VERSION"),
-    " ( musichoard@thenineworlds.net )"
-);
-
-#[derive(StructOpt)]
-struct Opt {
-    #[structopt(subcommand)]
-    command: OptCommand,
-}
-
-#[derive(StructOpt)]
-enum OptCommand {
-    #[structopt(about = "Search by artist MBID, title(, and date)")]
-    Title(OptTitle),
-    #[structopt(about = "Search by release group MBID")]
-    Rgid(OptRgid),
-}
-
-#[derive(StructOpt)]
-struct OptTitle {
-    #[structopt(help = "Release group's artist MBID")]
-    arid: Uuid,
-
-    #[structopt(help = "Release group title")]
-    title: String,
-
-    #[structopt(help = "Release group release date")]
-    date: Option<Date>,
-}
-
-#[derive(StructOpt)]
-struct OptRgid {
-    #[structopt(help = "Release group MBID")]
-    rgid: Uuid,
-}
-
-struct Date(AlbumDate);
-
-impl FromStr for Date {
-    type Err = ParseIntError;
-
-    fn from_str(s: &str) -> Result<Self, Self::Err> {
-        let mut elems = s.split('-');
-
-        let elem = elems.next();
-        let year = elem.map(|s| s.parse()).transpose()?;
-
-        let elem = elems.next();
-        let month = elem.map(|s| s.parse()).transpose()?;
-
-        let elem = elems.next();
-        let day = elem.map(|s| s.parse()).transpose()?;
-
-        Ok(Date(AlbumDate::new(year, month, day)))
-    }
-}
-
-impl From<Date> for AlbumDate {
-    fn from(value: Date) -> Self {
-        value.0
-    }
-}
-
-fn main() {
-    let opt = Opt::from_args();
-
-    println!("USER_AGENT: {USER_AGENT}");
-
-    let http = MusicBrainzHttp::new(USER_AGENT).expect("failed to create API client");
-    let mut client = MusicBrainzClient::new(http);
-
-    let mut request = SearchReleaseGroupRequest::default();
-    let arid: Mbid;
-    let date: AlbumDate;
-    let title: String;
-    let rgid: Mbid;
-    match opt.command {
-        OptCommand::Title(opt_title) => {
-            arid = opt_title.arid.into();
-            date = opt_title.date.map(Into::into).unwrap_or_default();
-            title = opt_title.title;
-            request
-                .arid(&arid)
-                .first_release_date(&date)
-                .release_group(&title);
-        }
-        OptCommand::Rgid(opt_rgid) => {
-            rgid = opt_rgid.rgid.into();
-            request.rgid(&rgid);
-        }
-    };
-
-    let matches = client
-        .search_release_group(request)
-        .expect("failed to make API call");
-
-    println!("{matches:#?}");
-}

src/external/musicbrainz/api/mod.rs

@@ -56,17 +56,21 @@ impl<Http> MusicBrainzClient<Http> {
     pub fn new(http: Http) -> Self {
         MusicBrainzClient { http }
     }
+}
 
-    fn format_album_date(date: &AlbumDate) -> Option<String> {
+pub struct ApiDisplay;
+
+impl ApiDisplay {
+    fn format_album_date(date: &AlbumDate) -> String {
         match date.year {
             Some(year) => match date.month {
                 Some(month) => match date.day {
-                    Some(day) => Some(format!("{year}-{month:02}-{day:02}")),
+                    Some(day) => format!("{year}-{month:02}-{day:02}"),
-                    None => Some(format!("{year}-{month:02}")),
+                    None => format!("{year}-{month:02}"),
                 },
-                None => Some(format!("{year}")),
+                None => format!("{year}"),
             },
-            None => None,
+            None => String::from("*"),
         }
     }
 }
@@ -241,22 +245,15 @@ mod tests {
 
     #[test]
     fn format_album_date() {
-        struct Null;
         assert_eq!(
-            MusicBrainzClient::<Null>::format_album_date(&AlbumDate::new(None, None, None)),
+            ApiDisplay::format_album_date(&AlbumDate::new(None, None, None)),
-            None
+            "*"
         );
+        assert_eq!(ApiDisplay::format_album_date(&(1986).into()), "1986");
+        assert_eq!(ApiDisplay::format_album_date(&(1986, 4).into()), "1986-04");
         assert_eq!(
-            MusicBrainzClient::<Null>::format_album_date(&(1986).into()),
+            ApiDisplay::format_album_date(&(1986, 4, 21).into()),
-            Some(String::from("1986"))
+            "1986-04-21"
-        );
-        assert_eq!(
-            MusicBrainzClient::<Null>::format_album_date(&(1986, 4).into()),
-            Some(String::from("1986-04"))
-        );
-        assert_eq!(
-            MusicBrainzClient::<Null>::format_album_date(&(1986, 4, 21).into()),
-            Some(String::from("1986-04-21"))
         );
     }
 

src/external/musicbrainz/api/search.rs

@@ -1,269 +0,0 @@
-//! Module for interacting with the [MusicBrainz API](https://musicbrainz.org/doc/MusicBrainz_API).
-
-use serde::Deserialize;
-use url::form_urlencoded;
-
-use crate::{
-    collection::{album::AlbumDate, musicbrainz::Mbid},
-    core::collection::album::{AlbumPrimaryType, AlbumSecondaryType},
-    external::musicbrainz::{
-        api::{
-            Error, MusicBrainzClient, SerdeAlbumDate, SerdeAlbumPrimaryType,
-            SerdeAlbumSecondaryType, SerdeMbid, MB_BASE_URL,
-        },
-        IMusicBrainzHttp,
-    },
-};
-
-impl<Http: IMusicBrainzHttp> MusicBrainzClient<Http> {
-    pub fn search_release_group(
-        &mut self,
-        request: SearchReleaseGroupRequest,
-    ) -> Result<SearchReleaseGroupResponse, Error> {
-        let mut query: Vec<String> = vec![];
-
-        if let Some(arid) = request.arid {
-            query.push(format!("arid:{}", arid.uuid().as_hyphenated()));
-        }
-
-        if let Some(date) = request.first_release_date {
-            if let Some(date_string) = Self::format_album_date(date) {
-                query.push(format!("firstreleasedate:{date_string}"))
-            }
-        }
-
-        if let Some(release_group) = request.release_group {
-            query.push(format!("releasegroup:\"{release_group}\""));
-        }
-
-        if let Some(rgid) = request.rgid {
-            query.push(format!("rgid:{}", rgid.uuid().as_hyphenated()));
-        }
-
-        let query: String =
-            form_urlencoded::byte_serialize(query.join(" AND ").as_bytes()).collect();
-        let url = format!("{MB_BASE_URL}/release-group?query={query}");
-
-        let response: DeserializeSearchReleaseGroupResponse = self.http.get(&url)?;
-        Ok(response.into())
-    }
-}
-
-#[derive(Default)]
-pub struct SearchReleaseGroupRequest<'a> {
-    arid: Option<&'a Mbid>,
-    first_release_date: Option<&'a AlbumDate>,
-    release_group: Option<&'a str>,
-    rgid: Option<&'a Mbid>,
-}
-
-impl<'a> SearchReleaseGroupRequest<'a> {
-    pub fn new() -> Self {
-        Self::default()
-    }
-
-    pub fn arid(&mut self, arid: &'a Mbid) -> &mut Self {
-        self.arid = Some(arid);
-        self
-    }
-
-    pub fn first_release_date(&mut self, first_release_date: &'a AlbumDate) -> &mut Self {
-        self.first_release_date = Some(first_release_date);
-        self
-    }
-
-    pub fn release_group(&mut self, release_group: &'a str) -> &mut Self {
-        self.release_group = Some(release_group);
-        self
-    }
-
-    pub fn rgid(&mut self, rgid: &'a Mbid) -> &mut Self {
-        self.rgid = Some(rgid);
-        self
-    }
-}
-
-#[derive(Debug, PartialEq, Eq)]
-pub struct SearchReleaseGroupResponse {
-    pub release_groups: Vec<SearchReleaseGroupResponseReleaseGroup>,
-}
-
-#[derive(Clone, Deserialize)]
-#[serde(rename_all(deserialize = "kebab-case"))]
-struct DeserializeSearchReleaseGroupResponse {
-    release_groups: Vec<DeserializeSearchReleaseGroupResponseReleaseGroup>,
-}
-
-impl From<DeserializeSearchReleaseGroupResponse> for SearchReleaseGroupResponse {
-    fn from(value: DeserializeSearchReleaseGroupResponse) -> Self {
-        SearchReleaseGroupResponse {
-            release_groups: value.release_groups.into_iter().map(Into::into).collect(),
-        }
-    }
-}
-
-#[derive(Clone, Debug, PartialEq, Eq)]
-pub struct SearchReleaseGroupResponseReleaseGroup {
-    pub score: u8,
-    pub id: Mbid,
-    pub title: String,
-    pub first_release_date: AlbumDate,
-    pub primary_type: AlbumPrimaryType,
-    pub secondary_types: Option<Vec<AlbumSecondaryType>>,
-}
-
-#[derive(Clone, Deserialize)]
-#[serde(rename_all(deserialize = "kebab-case"))]
-struct DeserializeSearchReleaseGroupResponseReleaseGroup {
-    score: u8,
-    id: SerdeMbid,
-    title: String,
-    first_release_date: SerdeAlbumDate,
-    primary_type: SerdeAlbumPrimaryType,
-    secondary_types: Option<Vec<SerdeAlbumSecondaryType>>,
-}
-
-impl From<DeserializeSearchReleaseGroupResponseReleaseGroup>
-    for SearchReleaseGroupResponseReleaseGroup
-{
-    fn from(value: DeserializeSearchReleaseGroupResponseReleaseGroup) -> Self {
-        SearchReleaseGroupResponseReleaseGroup {
-            score: value.score,
-            id: value.id.into(),
-            title: value.title,
-            first_release_date: value.first_release_date.into(),
-            primary_type: value.primary_type.into(),
-            secondary_types: value
-                .secondary_types
-                .map(|v| v.into_iter().map(Into::into).collect()),
-        }
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use mockall::{predicate, Sequence};
-
-    use crate::{collection::album::AlbumId, external::musicbrainz::MockIMusicBrainzHttp};
-
-    use super::*;
-
-    #[test]
-    fn search_release_group() {
-        let mut http = MockIMusicBrainzHttp::new();
-        let url_title = format!(
-                "https://musicbrainz.org/ws/2\
-                 /release-group\
-                 ?query=arid%3A{arid}+AND+firstreleasedate%3A{date}+AND+releasegroup%3A%22{title}%22",
-                arid = "00000000-0000-0000-0000-000000000000",
-                date = "1986-04",
-                title = "an+album",
-            );
-        let url_rgid = format!(
-            "https://musicbrainz.org/ws/2\
-                 /release-group\
-                 ?query=rgid%3A{rgid}",
-            rgid = "11111111-1111-1111-1111-111111111111",
-        );
-
-        let de_release_group = DeserializeSearchReleaseGroupResponseReleaseGroup {
-            score: 67,
-            id: SerdeMbid("11111111-1111-1111-1111-111111111111".try_into().unwrap()),
-            title: String::from("an album"),
-            first_release_date: SerdeAlbumDate((1986, 4).into()),
-            primary_type: SerdeAlbumPrimaryType(AlbumPrimaryType::Album),
-            secondary_types: Some(vec![SerdeAlbumSecondaryType(AlbumSecondaryType::Live)]),
-        };
-        let de_response = DeserializeSearchReleaseGroupResponse {
-            release_groups: vec![de_release_group.clone()],
-        };
-
-        let release_group = SearchReleaseGroupResponseReleaseGroup {
-            score: 67,
-            id: de_release_group.id.0,
-            title: de_release_group.title,
-            first_release_date: de_release_group.first_release_date.0,
-            primary_type: de_release_group.primary_type.0,
-            secondary_types: de_release_group
-                .secondary_types
-                .map(|v| v.into_iter().map(|st| st.0).collect()),
-        };
-        let response = SearchReleaseGroupResponse {
-            release_groups: vec![release_group.clone()],
-        };
-
-        let mut seq = Sequence::new();
-
-        let title_response = de_response.clone();
-        http.expect_get()
-            .times(1)
-            .with(predicate::eq(url_title))
-            .return_once(|_| Ok(title_response))
-            .in_sequence(&mut seq);
-
-        let rgid_response = de_response;
-        http.expect_get()
-            .times(1)
-            .with(predicate::eq(url_rgid))
-            .return_once(|_| Ok(rgid_response))
-            .in_sequence(&mut seq);
-
-        let mut client = MusicBrainzClient::new(http);
-
-        let arid: Mbid = "00000000-0000-0000-0000-000000000000".try_into().unwrap();
-        let title: AlbumId = AlbumId::new("an album");
-        let date = (1986, 4).into();
-
-        let mut request = SearchReleaseGroupRequest::new();
-        request
-            .arid(&arid)
-            .release_group(&title.title)
-            .first_release_date(&date);
-
-        let matches = client.search_release_group(request).unwrap();
-        assert_eq!(matches, response);
-
-        let rgid: Mbid = "11111111-1111-1111-1111-111111111111".try_into().unwrap();
-
-        let mut request = SearchReleaseGroupRequest::new();
-        request.rgid(&rgid);
-
-        let matches = client.search_release_group(request).unwrap();
-        assert_eq!(matches, response);
-    }
-
-    #[test]
-    fn search_release_group_empty_date() {
-        let mut http = MockIMusicBrainzHttp::new();
-        let url = format!(
-            "https://musicbrainz.org/ws/2\
-                 /release-group\
-                 ?query=arid%3A{arid}+AND+releasegroup%3A%22{title}%22",
-            arid = "00000000-0000-0000-0000-000000000000",
-            title = "an+album",
-        );
-
-        let de_response = DeserializeSearchReleaseGroupResponse {
-            release_groups: vec![],
-        };
-
-        http.expect_get()
-            .times(1)
-            .with(predicate::eq(url))
-            .return_once(|_| Ok(de_response));
-
-        let mut client = MusicBrainzClient::new(http);
-
-        let arid: Mbid = "00000000-0000-0000-0000-000000000000".try_into().unwrap();
-        let title: AlbumId = AlbumId::new("an album");
-        let date = AlbumDate::default();
-
-        let mut request = SearchReleaseGroupRequest::new();
-        request
-            .arid(&arid)
-            .release_group(&title.title)
-            .first_release_date(&date);
-
-        let _ = client.search_release_group(request).unwrap();
-    }
-}

src/external/musicbrainz/api/search/artist.rs

@@ -0,0 +1,145 @@
+use std::fmt;
+
+use serde::Deserialize;
+
+use crate::{
+    collection::{artist::ArtistId, musicbrainz::Mbid},
+    external::musicbrainz::api::SerdeMbid,
+};
+
+use super::query::{impl_term, EmptyQuery, EmptyQueryJoin, Query, QueryJoin};
+
+pub enum SearchArtist<'a> {
+    String(&'a str),
+}
+
+impl<'a> fmt::Display for SearchArtist<'a> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            Self::String(s) => write!(f, "\"{s}\""),
+        }
+    }
+}
+
+pub type SearchArtistRequest<'a> = Query<SearchArtist<'a>>;
+
+impl_term!(string, SearchArtist<'a>, String, &'a str);
+
+#[derive(Debug, PartialEq, Eq)]
+pub struct SearchArtistResponse {
+    pub artists: Vec<SearchArtistResponseArtist>,
+}
+
+#[derive(Clone, Deserialize)]
+#[serde(rename_all(deserialize = "kebab-case"))]
+pub struct DeserializeSearchArtistResponse {
+    artists: Vec<DeserializeSearchArtistResponseArtist>,
+}
+
+impl From<DeserializeSearchArtistResponse> for SearchArtistResponse {
+    fn from(value: DeserializeSearchArtistResponse) -> Self {
+        SearchArtistResponse {
+            artists: value.artists.into_iter().map(Into::into).collect(),
+        }
+    }
+}
+
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub struct SearchArtistResponseArtist {
+    pub score: u8,
+    pub id: Mbid,
+    pub name: ArtistId,
+    pub sort: Option<ArtistId>,
+    pub disambiguation: Option<String>,
+}
+
+#[derive(Clone, Deserialize)]
+#[serde(rename_all(deserialize = "kebab-case"))]
+struct DeserializeSearchArtistResponseArtist {
+    score: u8,
+    id: SerdeMbid,
+    name: String,
+    sort_name: String,
+    disambiguation: Option<String>,
+}
+
+impl From<DeserializeSearchArtistResponseArtist> for SearchArtistResponseArtist {
+    fn from(value: DeserializeSearchArtistResponseArtist) -> Self {
+        let sort: Option<ArtistId> = Some(value.sort_name)
+            .filter(|s| s != &value.name)
+            .map(Into::into);
+        SearchArtistResponseArtist {
+            score: value.score,
+            id: value.id.into(),
+            name: value.name.into(),
+            sort,
+            disambiguation: value.disambiguation,
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use mockall::predicate;
+
+    use crate::external::musicbrainz::{api::MusicBrainzClient, MockIMusicBrainzHttp};
+
+    use super::*;
+
+    fn de_response() -> DeserializeSearchArtistResponse {
+        let de_artist = DeserializeSearchArtistResponseArtist {
+            score: 67,
+            id: SerdeMbid("11111111-1111-1111-1111-111111111111".try_into().unwrap()),
+            name: String::from("an artist"),
+            sort_name: String::from("artist, an"),
+            disambiguation: None,
+        };
+        DeserializeSearchArtistResponse {
+            artists: vec![de_artist.clone()],
+        }
+    }
+
+    fn response(de_response: DeserializeSearchArtistResponse) -> SearchArtistResponse {
+        SearchArtistResponse {
+            artists: de_response
+                .artists
+                .into_iter()
+                .map(|a| SearchArtistResponseArtist {
+                    score: 67,
+                    id: a.id.0,
+                    name: a.name.clone().into(),
+                    sort: Some(a.sort_name).filter(|sn| sn != &a.name).map(Into::into),
+                    disambiguation: a.disambiguation,
+                })
+                .collect(),
+        }
+    }
+
+    #[test]
+    fn search_string() {
+        let mut http = MockIMusicBrainzHttp::new();
+        let url = format!(
+            "https://musicbrainz.org/ws/2\
+             /artist\
+             ?query=%22{no_field}%22",
+            no_field = "an+artist",
+        );
+
+        let de_response = de_response();
+        let response = response(de_response.clone());
+
+        http.expect_get()
+            .times(1)
+            .with(predicate::eq(url))
+            .return_once(|_| Ok(de_response));
+
+        let mut client = MusicBrainzClient::new(http);
+
+        let name = "an artist";
+
+        let query = SearchArtistRequest::new().string(name);
+
+        let matches = client.search_artist(query).unwrap();
+        assert_eq!(matches, response);
+    }
+}

src/external/musicbrainz/api/search/mod.rs

@@ -0,0 +1,46 @@
+//! Module for interacting with the [MusicBrainz API](https://musicbrainz.org/doc/MusicBrainz_API).
+mod artist;
+mod query;
+mod release_group;
+
+pub use artist::{SearchArtistRequest, SearchArtistResponse, SearchArtistResponseArtist};
+pub use release_group::{
+    SearchReleaseGroupRequest, SearchReleaseGroupResponse, SearchReleaseGroupResponseReleaseGroup,
+};
+
+use paste::paste;
+use url::form_urlencoded;
+
+use crate::external::musicbrainz::{
+    api::{
+        search::{
+            artist::DeserializeSearchArtistResponse,
+            release_group::DeserializeSearchReleaseGroupResponse,
+        },
+        Error, MusicBrainzClient, MB_BASE_URL,
+    },
+    IMusicBrainzHttp,
+};
+
+macro_rules! impl_search_entity {
+    ($name:ident, $entity:literal) => {
+        paste! {
+            pub fn [<search_ $name:snake>](
+                &mut self,
+                query: [<Search $name Request>]
+            ) -> Result<[<Search $name Response>], Error> {
+                let query: String =
+                    form_urlencoded::byte_serialize(format!("{query}").as_bytes()).collect();
+                let url = format!("{MB_BASE_URL}/{entity}?query={query}", entity = $entity);
+
+                let response: [<DeserializeSearch $name Response>] = self.http.get(&url)?;
+                Ok(response.into())
+            }
+        }
+    };
+}
+
+impl<Http: IMusicBrainzHttp> MusicBrainzClient<Http> {
+    impl_search_entity!(Artist, "artist");
+    impl_search_entity!(ReleaseGroup, "release-group");
+}

src/external/musicbrainz/api/search/query.rs

@@ -0,0 +1,312 @@
+use std::{fmt, marker::PhantomData};
+
+pub enum Logical {
+    Unary(Unary),
+    Binary(Boolean),
+}
+
+impl fmt::Display for Logical {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            Logical::Unary(u) => write!(f, "{u}"),
+            Logical::Binary(b) => write!(f, "{b}"),
+        }
+    }
+}
+
+pub enum Unary {
+    Require,
+    Prohibit,
+}
+
+impl fmt::Display for Unary {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            Unary::Require => write!(f, "+"),
+            Unary::Prohibit => write!(f, "-"),
+        }
+    }
+}
+
+pub enum Boolean {
+    And,
+    Or,
+    Not,
+}
+
+impl fmt::Display for Boolean {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            Boolean::And => write!(f, "AND "),
+            Boolean::Or => write!(f, "OR "),
+            Boolean::Not => write!(f, "NOT "),
+        }
+    }
+}
+
+pub enum Expression<Entity> {
+    Term(Entity),
+    Expr(Query<Entity>),
+}
+
+impl<Entity> From<Entity> for Expression<Entity> {
+    fn from(value: Entity) -> Self {
+        Expression::Term(value)
+    }
+}
+
+impl<Entity> From<Query<Entity>> for Expression<Entity> {
+    fn from(value: Query<Entity>) -> Self {
+        Expression::Expr(value)
+    }
+}
+
+impl<Entity: fmt::Display> fmt::Display for Expression<Entity> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            Expression::Term(t) => write!(f, "{t}"),
+            Expression::Expr(q) => write!(f, "({q})"),
+        }
+    }
+}
+
+pub struct EmptyQuery<Entity> {
+    _marker: PhantomData<Entity>,
+}
+
+impl<Entity> Default for EmptyQuery<Entity> {
+    fn default() -> Self {
+        EmptyQuery {
+            _marker: PhantomData,
+        }
+    }
+}
+
+impl<Entity> EmptyQuery<Entity> {
+    pub fn expression<Expr: Into<Expression<Entity>>>(self, expr: Expr) -> Query<Entity> {
+        Query {
+            left: (None, Box::new(expr.into())),
+            right: vec![],
+        }
+    }
+
+    pub fn require(self) -> EmptyQueryJoin<Entity> {
+        EmptyQueryJoin {
+            unary: Unary::Require,
+            _marker: PhantomData,
+        }
+    }
+
+    pub fn prohibit(self) -> EmptyQueryJoin<Entity> {
+        EmptyQueryJoin {
+            unary: Unary::Prohibit,
+            _marker: PhantomData,
+        }
+    }
+}
+
+pub struct EmptyQueryJoin<Entity> {
+    unary: Unary,
+    _marker: PhantomData<Entity>,
+}
+
+impl<Entity> EmptyQueryJoin<Entity> {
+    pub fn expression<Expr: Into<Expression<Entity>>>(self, expr: Expr) -> Query<Entity> {
+        Query {
+            left: (Some(self.unary), Box::new(expr.into())),
+            right: vec![],
+        }
+    }
+}
+
+pub struct Query<Entity> {
+    left: (Option<Unary>, Box<Expression<Entity>>),
+    right: Vec<(Logical, Box<Expression<Entity>>)>,
+}
+
+impl<Entity: fmt::Display> fmt::Display for Query<Entity> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        if let Some(u) = &self.left.0 {
+            write!(f, "{u}")?;
+        }
+
+        write!(f, "{}", self.left.1)?;
+
+        for (logical, expr) in self.right.iter() {
+            write!(f, " {logical}{expr}")?;
+        }
+
+        Ok(())
+    }
+}
+
+impl<Entity> Query<Entity> {
+    #[allow(clippy::new_ret_no_self)]
+    pub fn new() -> EmptyQuery<Entity> {
+        EmptyQuery::default()
+    }
+
+    pub fn require(self) -> QueryJoin<Entity> {
+        QueryJoin {
+            logical: Logical::Unary(Unary::Require),
+            query: self,
+        }
+    }
+
+    pub fn prohibit(self) -> QueryJoin<Entity> {
+        QueryJoin {
+            logical: Logical::Unary(Unary::Prohibit),
+            query: self,
+        }
+    }
+
+    pub fn and(self) -> QueryJoin<Entity> {
+        QueryJoin {
+            logical: Logical::Binary(Boolean::And),
+            query: self,
+        }
+    }
+
+    pub fn or(self) -> QueryJoin<Entity> {
+        QueryJoin {
+            logical: Logical::Binary(Boolean::Or),
+            query: self,
+        }
+    }
+
+    pub fn not(self) -> QueryJoin<Entity> {
+        QueryJoin {
+            logical: Logical::Binary(Boolean::Not),
+            query: self,
+        }
+    }
+}
+
+pub struct QueryJoin<Entity> {
+    logical: Logical,
+    query: Query<Entity>,
+}
+
+impl<Entity> QueryJoin<Entity> {
+    pub fn expression<Expr: Into<Expression<Entity>>>(mut self, expr: Expr) -> Query<Entity> {
+        self.query.right.push((self.logical, Box::new(expr.into())));
+        self.query
+    }
+}
+
+macro_rules! impl_term {
+    ($name:ident, $enum:ty, $variant:ident, $type:ty) => {
+        impl<'a> EmptyQuery<$enum> {
+            pub fn $name(self, $name: $type) -> Query<$enum> {
+                self.expression(<$enum>::$variant($name))
+            }
+        }
+
+        impl<'a> EmptyQueryJoin<$enum> {
+            pub fn $name(self, $name: $type) -> Query<$enum> {
+                self.expression(<$enum>::$variant($name))
+            }
+        }
+
+        impl<'a> QueryJoin<$enum> {
+            pub fn $name(self, $name: $type) -> Query<$enum> {
+                self.expression(<$enum>::$variant($name))
+            }
+        }
+    };
+}
+
+pub(crate) use impl_term;
+
+#[cfg(test)]
+mod tests {
+    use std::fmt;
+
+    use super::*;
+
+    pub enum TestEntity<'a> {
+        String(&'a str),
+    }
+
+    impl<'a> fmt::Display for TestEntity<'a> {
+        fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+            match self {
+                Self::String(s) => write!(f, "\"{s}\""),
+            }
+        }
+    }
+
+    type TestEntityRequest<'a> = Query<TestEntity<'a>>;
+
+    impl_term!(string, TestEntity<'a>, String, &'a str);
+
+    #[test]
+    fn lucene_logical() {
+        let query = TestEntityRequest::new()
+            .string("jakarta apache")
+            .or()
+            .string("jakarta");
+        assert_eq!(format!("{query}"), "\"jakarta apache\" OR \"jakarta\"");
+
+        let query = TestEntityRequest::new()
+            .string("jakarta apache")
+            .and()
+            .string("jakarta");
+        assert_eq!(format!("{query}"), "\"jakarta apache\" AND \"jakarta\"");
+
+        let query = TestEntityRequest::new()
+            .require()
+            .string("jakarta")
+            .or()
+            .string("lucene");
+        assert_eq!(format!("{query}"), "+\"jakarta\" OR \"lucene\"");
+
+        let query = TestEntityRequest::new()
+            .string("lucene")
+            .require()
+            .string("jakarta");
+        assert_eq!(format!("{query}"), "\"lucene\" +\"jakarta\"");
+
+        let query = TestEntityRequest::new()
+            .string("jakarta apache")
+            .not()
+            .string("Apache Lucene");
+        assert_eq!(
+            format!("{query}"),
+            "\"jakarta apache\" NOT \"Apache Lucene\""
+        );
+
+        let query = TestEntityRequest::new()
+            .prohibit()
+            .string("Apache Lucene")
+            .or()
+            .string("jakarta apache");
+        assert_eq!(
+            format!("{query}"),
+            "-\"Apache Lucene\" OR \"jakarta apache\""
+        );
+
+        let query = TestEntityRequest::new()
+            .string("jakarta apache")
+            .prohibit()
+            .string("Apache Lucene");
+        assert_eq!(format!("{query}"), "\"jakarta apache\" -\"Apache Lucene\"");
+    }
+
+    #[test]
+    fn lucene_grouping() {
+        let query = TestEntityRequest::new()
+            .expression(
+                TestEntityRequest::new()
+                    .string("jakarta")
+                    .or()
+                    .string("apache"),
+            )
+            .and()
+            .string("website");
+        assert_eq!(
+            format!("{query}"),
+            "(\"jakarta\" OR \"apache\") AND \"website\""
+        );
+    }
+}

src/external/musicbrainz/api/search/release_group.rs

@@ -0,0 +1,244 @@
+use std::fmt;
+
+use serde::Deserialize;
+
+use crate::{
+    collection::{
+        album::{AlbumDate, AlbumId, AlbumPrimaryType, AlbumSecondaryType},
+        musicbrainz::Mbid,
+    },
+    external::musicbrainz::api::{
+        ApiDisplay, SerdeAlbumDate, SerdeAlbumPrimaryType, SerdeAlbumSecondaryType, SerdeMbid,
+    },
+};
+
+use super::query::{impl_term, EmptyQuery, EmptyQueryJoin, Query, QueryJoin};
+
+pub enum SearchReleaseGroup<'a> {
+    String(&'a str),
+    Arid(&'a Mbid),
+    FirstReleaseDate(&'a AlbumDate),
+    ReleaseGroup(&'a str),
+    Rgid(&'a Mbid),
+}
+
+impl<'a> fmt::Display for SearchReleaseGroup<'a> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            Self::String(s) => write!(f, "\"{s}\""),
+            Self::Arid(arid) => write!(f, "arid:{}", arid.uuid().as_hyphenated()),
+            Self::FirstReleaseDate(date) => write!(
+                f,
+                "firstreleasedate:{}",
+                ApiDisplay::format_album_date(date)
+            ),
+            Self::ReleaseGroup(release_group) => write!(f, "releasegroup:\"{release_group}\""),
+            Self::Rgid(rgid) => write!(f, "rgid:{}", rgid.uuid().as_hyphenated()),
+        }
+    }
+}
+
+pub type SearchReleaseGroupRequest<'a> = Query<SearchReleaseGroup<'a>>;
+
+impl_term!(string, SearchReleaseGroup<'a>, String, &'a str);
+impl_term!(arid, SearchReleaseGroup<'a>, Arid, &'a Mbid);
+impl_term!(
+    first_release_date,
+    SearchReleaseGroup<'a>,
+    FirstReleaseDate,
+    &'a AlbumDate
+);
+impl_term!(release_group, SearchReleaseGroup<'a>, ReleaseGroup, &'a str);
+impl_term!(rgid, SearchReleaseGroup<'a>, Rgid, &'a Mbid);
+
+#[derive(Debug, PartialEq, Eq)]
+pub struct SearchReleaseGroupResponse {
+    pub release_groups: Vec<SearchReleaseGroupResponseReleaseGroup>,
+}
+
+#[derive(Clone, Deserialize)]
+#[serde(rename_all(deserialize = "kebab-case"))]
+pub struct DeserializeSearchReleaseGroupResponse {
+    release_groups: Vec<DeserializeSearchReleaseGroupResponseReleaseGroup>,
+}
+
+impl From<DeserializeSearchReleaseGroupResponse> for SearchReleaseGroupResponse {
+    fn from(value: DeserializeSearchReleaseGroupResponse) -> Self {
+        SearchReleaseGroupResponse {
+            release_groups: value.release_groups.into_iter().map(Into::into).collect(),
+        }
+    }
+}
+
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub struct SearchReleaseGroupResponseReleaseGroup {
+    pub score: u8,
+    pub id: Mbid,
+    pub title: AlbumId,
+    pub first_release_date: AlbumDate,
+    pub primary_type: AlbumPrimaryType,
+    pub secondary_types: Option<Vec<AlbumSecondaryType>>,
+}
+
+#[derive(Clone, Deserialize)]
+#[serde(rename_all(deserialize = "kebab-case"))]
+pub struct DeserializeSearchReleaseGroupResponseReleaseGroup {
+    score: u8,
+    id: SerdeMbid,
+    title: String,
+    first_release_date: SerdeAlbumDate,
+    primary_type: SerdeAlbumPrimaryType,
+    secondary_types: Option<Vec<SerdeAlbumSecondaryType>>,
+}
+
+impl From<DeserializeSearchReleaseGroupResponseReleaseGroup>
+    for SearchReleaseGroupResponseReleaseGroup
+{
+    fn from(value: DeserializeSearchReleaseGroupResponseReleaseGroup) -> Self {
+        SearchReleaseGroupResponseReleaseGroup {
+            score: value.score,
+            id: value.id.into(),
+            title: value.title.into(),
+            first_release_date: value.first_release_date.into(),
+            primary_type: value.primary_type.into(),
+            secondary_types: value
+                .secondary_types
+                .map(|v| v.into_iter().map(Into::into).collect()),
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use mockall::predicate;
+
+    use crate::external::musicbrainz::{api::MusicBrainzClient, MockIMusicBrainzHttp};
+
+    use super::*;
+
+    fn de_response() -> DeserializeSearchReleaseGroupResponse {
+        let de_release_group = DeserializeSearchReleaseGroupResponseReleaseGroup {
+            score: 67,
+            id: SerdeMbid("11111111-1111-1111-1111-111111111111".try_into().unwrap()),
+            title: String::from("an album"),
+            first_release_date: SerdeAlbumDate((1986, 4).into()),
+            primary_type: SerdeAlbumPrimaryType(AlbumPrimaryType::Album),
+            secondary_types: Some(vec![SerdeAlbumSecondaryType(AlbumSecondaryType::Live)]),
+        };
+        DeserializeSearchReleaseGroupResponse {
+            release_groups: vec![de_release_group.clone()],
+        }
+    }
+
+    fn response(de_response: DeserializeSearchReleaseGroupResponse) -> SearchReleaseGroupResponse {
+        SearchReleaseGroupResponse {
+            release_groups: de_response
+                .release_groups
+                .into_iter()
+                .map(|rg| SearchReleaseGroupResponseReleaseGroup {
+                    score: 67,
+                    id: rg.id.0,
+                    title: rg.title.into(),
+                    first_release_date: rg.first_release_date.0,
+                    primary_type: rg.primary_type.0,
+                    secondary_types: rg
+                        .secondary_types
+                        .map(|v| v.into_iter().map(|st| st.0).collect()),
+                })
+                .collect(),
+        }
+    }
+
+    #[test]
+    fn search_string() {
+        let mut http = MockIMusicBrainzHttp::new();
+        let url = format!(
+            "https://musicbrainz.org/ws/2\
+             /release-group\
+             ?query=%22{title}%22",
+            title = "an+album",
+        );
+
+        let de_response = de_response();
+        let response = response(de_response.clone());
+
+        http.expect_get()
+            .times(1)
+            .with(predicate::eq(url))
+            .return_once(|_| Ok(de_response));
+
+        let mut client = MusicBrainzClient::new(http);
+
+        let title = "an album";
+
+        let query = SearchReleaseGroupRequest::new().string(title);
+
+        let matches = client.search_release_group(query).unwrap();
+        assert_eq!(matches, response);
+    }
+
+    #[test]
+    fn search_arid_album_date_release_group() {
+        let mut http = MockIMusicBrainzHttp::new();
+        let url = format!(
+            "https://musicbrainz.org/ws/2\
+             /release-group\
+             ?query=arid%3A{arid}+AND+releasegroup%3A%22{title}%22+AND+firstreleasedate%3A{date}",
+            arid = "00000000-0000-0000-0000-000000000000",
+            date = "1986-04",
+            title = "an+album",
+        );
+
+        let de_response = de_response();
+        let response = response(de_response.clone());
+
+        http.expect_get()
+            .times(1)
+            .with(predicate::eq(url))
+            .return_once(|_| Ok(de_response));
+
+        let mut client = MusicBrainzClient::new(http);
+
+        let arid: Mbid = "00000000-0000-0000-0000-000000000000".try_into().unwrap();
+        let title = "an album";
+        let date = (1986, 4).into();
+
+        let query = SearchReleaseGroupRequest::new()
+            .arid(&arid)
+            .and()
+            .release_group(title)
+            .and()
+            .first_release_date(&date);
+
+        let matches = client.search_release_group(query).unwrap();
+        assert_eq!(matches, response);
+    }
+
+    #[test]
+    fn search_rgid() {
+        let mut http = MockIMusicBrainzHttp::new();
+        let url = format!(
+            "https://musicbrainz.org/ws/2\
+             /release-group\
+             ?query=rgid%3A{rgid}",
+            rgid = "11111111-1111-1111-1111-111111111111",
+        );
+
+        let de_response = de_response();
+        let response = response(de_response.clone());
+
+        http.expect_get()
+            .times(1)
+            .with(predicate::eq(url))
+            .return_once(|_| Ok(de_response));
+
+        let mut client = MusicBrainzClient::new(http);
+
+        let rgid: Mbid = "11111111-1111-1111-1111-111111111111".try_into().unwrap();
+
+        let query = SearchReleaseGroupRequest::new().rgid(&rgid);
+
+        let matches = client.search_release_group(query).unwrap();
+        assert_eq!(matches, response);
+    }
+}

src/tui/app/machine/browse.rs

@@ -91,14 +91,12 @@ impl IAppInteractBrowse for AppMachine<AppBrowse> {
             }
         };
 
-        let arid = match artist.musicbrainz {
+        let mut matches = vec![];
-            Some(ref mbid) => mbid.mbid(),
+
-            None => {
+        match artist.musicbrainz {
-                return AppMachine::error(self.inner, "cannot fetch: missing artist MBID").into()
+            Some(ref mbid) => {
-            }
+                let arid = mbid.mbid();
-        };
 
-        let mut artist_album_matches = vec![];
                 let mut album_iter = artist.albums.iter().peekable();
                 while let Some(album) = album_iter.next() {
                     if album.musicbrainz.is_some() {
@@ -106,10 +104,7 @@ impl IAppInteractBrowse for AppMachine<AppBrowse> {
                     }
 
                     match self.inner.musicbrainz.search_release_group(arid, album) {
-                Ok(matches) => artist_album_matches.push(AppMatchesInfo {
+                        Ok(list) => matches.push(AppMatchesInfo::album(album.clone(), list)),
-                    matching: album.clone(),
-                    matches,
-                }),
                         Err(err) => return AppMachine::error(self.inner, err.to_string()).into(),
                     }
 
@@ -117,8 +112,14 @@ impl IAppInteractBrowse for AppMachine<AppBrowse> {
                         thread::sleep(time::Duration::from_secs(1));
                     }
                 }
+            }
+            None => match self.inner.musicbrainz.search_artist(artist) {
+                Ok(list) => matches.push(AppMatchesInfo::artist(artist.clone(), list)),
+                Err(err) => return AppMachine::error(self.inner, err.to_string()).into(),
+            },
+        };
 
-        AppMachine::matches(self.inner, artist_album_matches).into()
+        AppMachine::matches(self.inner, matches).into()
     }
 
     fn no_op(self) -> Self::APP {
@@ -129,7 +130,7 @@ impl IAppInteractBrowse for AppMachine<AppBrowse> {
 #[cfg(test)]
 mod tests {
     use mockall::{predicate, Sequence};
-    use musichoard::collection::{album::Album, musicbrainz::Mbid};
+    use musichoard::collection::{album::Album, artist::Artist, musicbrainz::Mbid};
 
     use crate::tui::{
         app::{
@@ -257,8 +258,19 @@ mod tests {
 
         let public_matches = public.state.unwrap_matches();
 
-        assert_eq!(public_matches.matching, Some(&album_1));
+        assert_eq!(
-        assert_eq!(public_matches.matches, Some(matches_1.as_slice()));
+            public_matches
+                .matches
+                .as_ref()
+                .unwrap()
+                .album_ref()
+                .matching,
+            &album_1
+        );
+        assert_eq!(
+            public_matches.matches.as_ref().unwrap().album_ref().list,
+            matches_1.as_slice()
+        );
 
         let mut app = app.unwrap_matches().select();
 
@@ -267,8 +279,19 @@ mod tests {
 
         let public_matches = public.state.unwrap_matches();
 
-        assert_eq!(public_matches.matching, Some(&album_4));
+        assert_eq!(
-        assert_eq!(public_matches.matches, Some(matches_4.as_slice()));
+            public_matches
+                .matches
+                .as_ref()
+                .unwrap()
+                .album_ref()
+                .matching,
+            &album_4
+        );
+        assert_eq!(
+            public_matches.matches.as_ref().unwrap().album_ref().list,
+            matches_4.as_slice()
+        );
 
         let app = app.unwrap_matches().select();
         app.unwrap_browse();
@@ -282,19 +305,78 @@ mod tests {
     }
 
     #[test]
-    fn fetch_musicbrainz_no_mbid() {
+    fn fetch_musicbrainz_no_artist_mbid() {
-        let browse = AppMachine::browse(inner(music_hoard(COLLECTION.to_owned())));
+        let mut mb_api = Box::new(MockIMusicBrainz::new());
+
+        let artist = COLLECTION[3].clone();
+
+        let artist_match_1 = Match::new(100, artist.clone());
+        let artist_match_2 = Match::new(50, artist.clone());
+        let matches = vec![artist_match_1.clone(), artist_match_2.clone()];
+
+        let result: Result<Vec<Match<Artist>>, musicbrainz::Error> = Ok(matches.clone());
+
+        mb_api
+            .expect_search_artist()
+            .with(predicate::eq(artist.clone()))
+            .times(1)
+            .return_once(|_| result);
+
+        let browse = AppMachine::browse(inner_with_mb(music_hoard(COLLECTION.to_owned()), mb_api));
 
         // Use the fourth artist for this test as they have no MBID.
         let browse = browse.increment_selection(Delta::Line).unwrap_browse();
         let browse = browse.increment_selection(Delta::Line).unwrap_browse();
         let browse = browse.increment_selection(Delta::Line).unwrap_browse();
+        let mut app = browse.fetch_musicbrainz();
+
+        let public = app.get();
+        assert!(matches!(public.state, AppState::Matches(_)));
+
+        let public_matches = public.state.unwrap_matches();
+
+        assert_eq!(
+            public_matches
+                .matches
+                .as_ref()
+                .unwrap()
+                .artist_ref()
+                .matching,
+            &artist
+        );
+        assert_eq!(
+            public_matches.matches.as_ref().unwrap().artist_ref().list,
+            matches.as_slice()
+        );
+
+        let app = app.unwrap_matches().select();
+        app.unwrap_browse();
+    }
+
+    #[test]
+    fn fetch_musicbrainz_artist_api_error() {
+        let mut mb_api = Box::new(MockIMusicBrainz::new());
+
+        let error = Err(musicbrainz::Error::RateLimit);
+
+        mb_api
+            .expect_search_artist()
+            .times(1)
+            .return_once(|_| error);
+
+        let browse = AppMachine::browse(inner_with_mb(music_hoard(COLLECTION.to_owned()), mb_api));
+
+        // Use the fourth artist for this test as they have no MBID.
+        let browse = browse.increment_selection(Delta::Line).unwrap_browse();
+        let browse = browse.increment_selection(Delta::Line).unwrap_browse();
+        let browse = browse.increment_selection(Delta::Line).unwrap_browse();
+
         let app = browse.fetch_musicbrainz();
         app.unwrap_error();
     }
 
     #[test]
-    fn fetch_musicbrainz_api_error() {
+    fn fetch_musicbrainz_album_api_error() {
         let mut mb_api = Box::new(MockIMusicBrainz::new());
 
         let error = Err(musicbrainz::Error::RateLimit);

src/tui/app/machine/matches.rs

@@ -1,19 +1,103 @@
 use std::cmp;
 
-use musichoard::collection::album::Album;
+use musichoard::collection::{album::Album, artist::Artist};
 
 use crate::tui::{
     app::{
         machine::{App, AppInner, AppMachine},
-        AppPublic, AppPublicMatches, AppState, IAppInteractMatches, WidgetState,
+        AppPublic, AppPublicAlbumMatches, AppPublicArtistMatches, AppPublicMatches,
+        AppPublicMatchesInfo, AppState, IAppInteractMatches, WidgetState,
     },
     lib::interface::musicbrainz::Match,
 };
 
 #[derive(Clone, Debug, PartialEq, Eq)]
-pub struct AppMatchesInfo {
+pub struct AppArtistMatchesInfo {
+    pub matching: Artist,
+    pub list: Vec<Match<Artist>>,
+}
+
+impl AppArtistMatchesInfo {
+    fn is_empty(&self) -> bool {
+        self.list.is_empty()
+    }
+
+    fn len(&self) -> usize {
+        self.list.len()
+    }
+}
+
+impl<'app> From<&'app AppArtistMatchesInfo> for AppPublicArtistMatches<'app> {
+    fn from(value: &'app AppArtistMatchesInfo) -> Self {
+        AppPublicArtistMatches {
+            matching: &value.matching,
+            list: &value.list,
+        }
+    }
+}
+
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub struct AppAlbumMatchesInfo {
     pub matching: Album,
-    pub matches: Vec<Match<Album>>,
+    pub list: Vec<Match<Album>>,
+}
+
+impl AppAlbumMatchesInfo {
+    fn is_empty(&self) -> bool {
+        self.list.is_empty()
+    }
+
+    fn len(&self) -> usize {
+        self.list.len()
+    }
+}
+
+impl<'app> From<&'app AppAlbumMatchesInfo> for AppPublicAlbumMatches<'app> {
+    fn from(value: &'app AppAlbumMatchesInfo) -> Self {
+        AppPublicAlbumMatches {
+            matching: &value.matching,
+            list: &value.list,
+        }
+    }
+}
+
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub enum AppMatchesInfo {
+    Artist(AppArtistMatchesInfo),
+    Album(AppAlbumMatchesInfo),
+}
+
+impl AppMatchesInfo {
+    fn is_empty(&self) -> bool {
+        match self {
+            Self::Artist(a) => a.is_empty(),
+            Self::Album(a) => a.is_empty(),
+        }
+    }
+
+    fn len(&self) -> usize {
+        match self {
+            Self::Artist(a) => a.len(),
+            Self::Album(a) => a.len(),
+        }
+    }
+
+    pub fn artist(matching: Artist, list: Vec<Match<Artist>>) -> Self {
+        AppMatchesInfo::Artist(AppArtistMatchesInfo { matching, list })
+    }
+
+    pub fn album(matching: Album, list: Vec<Match<Album>>) -> Self {
+        AppMatchesInfo::Album(AppAlbumMatchesInfo { matching, list })
+    }
+}
+
+impl<'app> From<&'app AppMatchesInfo> for AppPublicMatchesInfo<'app> {
+    fn from(value: &'app AppMatchesInfo) -> Self {
+        match value {
+            AppMatchesInfo::Artist(a) => AppPublicMatchesInfo::Artist(a.into()),
+            AppMatchesInfo::Album(a) => AppPublicMatchesInfo::Album(a.into()),
+        }
+    }
 }
 
 pub struct AppMatches {
@@ -28,7 +112,7 @@ impl AppMachine<AppMatches> {
         let mut state = WidgetState::default();
         if let Some(matches_info) = matches_info_vec.first() {
             index = Some(0);
-            if !matches_info.matches.is_empty() {
+            if !matches_info.is_empty() {
                 state.list.select(Some(0));
             }
         }
@@ -52,18 +136,14 @@ impl From<AppMachine<AppMatches>> for App {
 
 impl<'a> From<&'a mut AppMachine<AppMatches>> for AppPublic<'a> {
     fn from(machine: &'a mut AppMachine<AppMatches>) -> Self {
-        let (matching, matches) = match machine.state.index {
+        let matches = machine
-            Some(index) => (
+            .state
-                Some(&machine.state.matches_info_vec[index].matching),
+            .index
-                Some(machine.state.matches_info_vec[index].matches.as_slice()),
+            .map(|index| (&machine.state.matches_info_vec[index]).into());
-            ),
-            None => (None, None),
-        };
 
         AppPublic {
             inner: (&mut machine.inner).into(),
             state: AppState::Matches(AppPublicMatches {
-                matching,
                 matches,
                 state: &mut machine.state.state,
             }),
@@ -89,7 +169,6 @@ impl IAppInteractMatches for AppMachine<AppMatches> {
             let to = cmp::min(
                 result,
                 self.state.matches_info_vec[self.state.index.unwrap()]
-                    .matches
                     .len()
                     .saturating_sub(1),
             );
@@ -104,7 +183,7 @@ impl IAppInteractMatches for AppMachine<AppMatches> {
         self.state.state = WidgetState::default();
         if let Some(index) = self.state.index {
             if let Some(matches_info) = self.state.matches_info_vec.get(index) {
-                if !matches_info.matches.is_empty() {
+                if !matches_info.is_empty() {
                     self.state.state.list.select(Some(0));
                 }
                 return self.into();
@@ -125,7 +204,10 @@ impl IAppInteractMatches for AppMachine<AppMatches> {
 
 #[cfg(test)]
 mod tests {
-    use musichoard::collection::album::{AlbumDate, AlbumId, AlbumPrimaryType, AlbumSecondaryType};
+    use musichoard::collection::{
+        album::{AlbumDate, AlbumId, AlbumPrimaryType, AlbumSecondaryType},
+        artist::ArtistId,
+    };
 
     use crate::tui::app::{
         machine::tests::{inner, music_hoard},
@@ -134,7 +216,40 @@ mod tests {
 
     use super::*;
 
-    fn matches_info_vec() -> Vec<AppMatchesInfo> {
+    impl AppMatchesInfo {
+        fn album_ref(&self) -> &AppAlbumMatchesInfo {
+            match self {
+                Self::Album(a) => a,
+                Self::Artist(_) => panic!(),
+            }
+        }
+    }
+
+    fn artist_matches_info_vec() -> Vec<AppMatchesInfo> {
+        let artist_1 = Artist::new(ArtistId::new("Artist 1"));
+
+        let artist_1_1 = artist_1.clone();
+        let artist_match_1_1 = Match::new(100, artist_1_1);
+
+        let artist_1_2 = artist_1.clone();
+        let mut artist_match_1_2 = Match::new(100, artist_1_2);
+        artist_match_1_2.set_disambiguation("some disambiguation");
+
+        let list = vec![artist_match_1_1.clone(), artist_match_1_2.clone()];
+        let matches_info_1 = AppMatchesInfo::artist(artist_1.clone(), list);
+
+        let artist_2 = Artist::new(ArtistId::new("Artist 2"));
+
+        let artist_2_1 = artist_1.clone();
+        let album_match_2_1 = Match::new(100, artist_2_1);
+
+        let list = vec![album_match_2_1.clone()];
+        let matches_info_2 = AppMatchesInfo::artist(artist_2.clone(), list);
+
+        vec![matches_info_1, matches_info_2]
+    }
+
+    fn album_matches_info_vec() -> Vec<AppMatchesInfo> {
         let album_1 = Album::new(
             AlbumId::new("Album 1"),
             AlbumDate::new(Some(1990), Some(5), None),
@@ -143,23 +258,15 @@ mod tests {
         );
 
         let album_1_1 = album_1.clone();
-        let album_match_1_1 = Match {
+        let album_match_1_1 = Match::new(100, album_1_1);
-            score: 100,
-            item: album_1_1,
-        };
 
         let mut album_1_2 = album_1.clone();
         album_1_2.id.title.push_str(" extra title part");
         album_1_2.secondary_types.pop();
-        let album_match_1_2 = Match {
+        let album_match_1_2 = Match::new(100, album_1_2);
-            score: 100,
-            item: album_1_2,
-        };
 
-        let matches_info_1 = AppMatchesInfo {
+        let list = vec![album_match_1_1.clone(), album_match_1_2.clone()];
-            matching: album_1.clone(),
+        let matches_info_1 = AppMatchesInfo::album(album_1.clone(), list);
-            matches: vec![album_match_1_1.clone(), album_match_1_2.clone()],
-        };
 
         let album_2 = Album::new(
             AlbumId::new("Album 2"),
@@ -169,15 +276,10 @@ mod tests {
         );
 
         let album_2_1 = album_1.clone();
-        let album_match_2_1 = Match {
+        let album_match_2_1 = Match::new(100, album_2_1);
-            score: 100,
-            item: album_2_1,
-        };
 
-        let matches_info_2 = AppMatchesInfo {
+        let list = vec![album_match_2_1.clone()];
-            matching: album_2.clone(),
+        let matches_info_2 = AppMatchesInfo::album(album_2.clone(), list);
-            matches: vec![album_match_2_1.clone()],
-        };
 
         vec![matches_info_1, matches_info_2]
     }
@@ -196,14 +298,13 @@ mod tests {
         let public = app.get();
         let public_matches = public.state.unwrap_matches();
 
-        assert_eq!(public_matches.matching, None);
         assert_eq!(public_matches.matches, None);
         assert_eq!(public_matches.state, &widget_state);
     }
 
     #[test]
     fn create_nonempty() {
-        let matches_info_vec = matches_info_vec();
+        let matches_info_vec = album_matches_info_vec();
         let matches = AppMachine::matches(inner(music_hoard(vec![])), matches_info_vec.clone());
 
         let mut widget_state = WidgetState::default();
@@ -217,17 +318,23 @@ mod tests {
         let public = app.get();
         let public_matches = public.state.unwrap_matches();
 
-        assert_eq!(public_matches.matching, Some(&matches_info_vec[0].matching));
         assert_eq!(
-            public_matches.matches,
+            public_matches
-            Some(matches_info_vec[0].matches.as_slice())
+                .matches
+                .as_ref()
+                .unwrap()
+                .album_ref()
+                .matching,
+            &matches_info_vec[0].album_ref().matching
+        );
+        assert_eq!(
+            public_matches.matches.as_ref().unwrap().album_ref().list,
+            matches_info_vec[0].album_ref().list.as_slice()
         );
         assert_eq!(public_matches.state, &widget_state);
     }
 
-    #[test]
+    fn matches_flow(matches_info_vec: Vec<AppMatchesInfo>) {
-    fn matches_flow() {
-        let matches_info_vec = matches_info_vec();
         let matches = AppMachine::matches(inner(music_hoard(vec![])), matches_info_vec.clone());
 
         let mut widget_state = WidgetState::default();
@@ -261,9 +368,19 @@ mod tests {
         matches.select().unwrap_browse();
     }
 
+    #[test]
+    fn artist_matches_flow() {
+        matches_flow(artist_matches_info_vec());
+    }
+
+    #[test]
+    fn album_matches_flow() {
+        matches_flow(album_matches_info_vec());
+    }
+
     #[test]
     fn matches_abort() {
-        let matches_info_vec = matches_info_vec();
+        let matches_info_vec = album_matches_info_vec();
         let matches = AppMachine::matches(inner(music_hoard(vec![])), matches_info_vec.clone());
 
         let mut widget_state = WidgetState::default();

src/tui/app/mod.rs

@@ -4,7 +4,7 @@ mod selection;
 pub use machine::App;
 pub use selection::{Category, Delta, Selection, WidgetState};
 
-use musichoard::collection::{album::Album, Collection};
+use musichoard::collection::{album::Album, artist::Artist, Collection};
 
 use crate::tui::lib::interface::musicbrainz::Match;
 
@@ -129,9 +129,26 @@ pub struct AppPublicInner<'app> {
     pub selection: &'app mut Selection,
 }
 
+#[derive(Debug, PartialEq, Eq)]
+pub struct AppPublicArtistMatches<'app> {
+    pub matching: &'app Artist,
+    pub list: &'app [Match<Artist>],
+}
+
+#[derive(Debug, PartialEq, Eq)]
+pub struct AppPublicAlbumMatches<'app> {
+    pub matching: &'app Album,
+    pub list: &'app [Match<Album>],
+}
+
+#[derive(Debug, PartialEq, Eq)]
+pub enum AppPublicMatchesInfo<'app> {
+    Artist(AppPublicArtistMatches<'app>),
+    Album(AppPublicAlbumMatches<'app>),
+}
+
 pub struct AppPublicMatches<'app> {
-    pub matching: Option<&'app Album>,
+    pub matches: Option<AppPublicMatchesInfo<'app>>,
-    pub matches: Option<&'app [Match<Album>]>,
     pub state: &'app mut WidgetState,
 }
 
@@ -148,6 +165,22 @@ impl<BS, IS, RS, SS, MS, ES, CS> AppState<BS, IS, RS, SS, MS, ES, CS> {
 mod tests {
     use super::*;
 
+    impl<'app> AppPublicMatchesInfo<'app> {
+        pub fn artist_ref(&self) -> &AppPublicArtistMatches<'app> {
+            match self {
+                Self::Artist(m) => m,
+                _ => panic!(),
+            }
+        }
+
+        pub fn album_ref(&self) -> &AppPublicAlbumMatches<'app> {
+            match self {
+                Self::Album(m) => m,
+                _ => panic!(),
+            }
+        }
+    }
+
     #[test]
     fn app_is_state() {
         let state = AppPublicState::Search("get rekt");

src/tui/lib/external/musicbrainz/mod.rs

@@ -3,11 +3,15 @@
 use musichoard::{
     collection::{
         album::{Album, AlbumDate},
+        artist::Artist,
         musicbrainz::Mbid,
     },
     external::musicbrainz::{
         api::{
-            search::{SearchReleaseGroupRequest, SearchReleaseGroupResponseReleaseGroup},
+            search::{
+                SearchArtistRequest, SearchArtistResponseArtist, SearchReleaseGroupRequest,
+                SearchReleaseGroupResponseReleaseGroup,
+            },
             MusicBrainzClient,
         },
         IMusicBrainzHttp,
@@ -28,6 +32,18 @@ impl<Http> MusicBrainz<Http> {
 }
 
 impl<Http: IMusicBrainzHttp> IMusicBrainz for MusicBrainz<Http> {
+    fn search_artist(&mut self, artist: &Artist) -> Result<Vec<Match<Artist>>, Error> {
+        let query = SearchArtistRequest::new().string(&artist.id.name);
+
+        let mb_response = self.client.search_artist(query)?;
+
+        Ok(mb_response
+            .artists
+            .into_iter()
+            .map(from_search_artist_response_artist)
+            .collect())
+    }
+
     fn search_release_group(
         &mut self,
         arid: &Mbid,
@@ -37,13 +53,14 @@ impl<Http: IMusicBrainzHttp> IMusicBrainz for MusicBrainz<Http> {
         // with just the year should be enough anyway.
         let date = AlbumDate::new(album.date.year, None, None);
 
-        let mut request = SearchReleaseGroupRequest::default();
+        let query = SearchReleaseGroupRequest::new()
-        request
             .arid(arid)
+            .and()
             .first_release_date(&date)
+            .and()
             .release_group(&album.id.title);
 
-        let mb_response = self.client.search_release_group(request)?;
+        let mb_response = self.client.search_release_group(query)?;
 
         Ok(mb_response
             .release_groups
@@ -53,6 +70,21 @@ impl<Http: IMusicBrainzHttp> IMusicBrainz for MusicBrainz<Http> {
     }
 }
 
+fn from_search_artist_response_artist(entity: SearchArtistResponseArtist) -> Match<Artist> {
+    let mut artist = Artist::new(entity.name);
+    if let Some(sort) = entity.sort {
+        artist.set_sort_key(sort);
+    }
+    artist.set_musicbrainz_ref(entity.id.into());
+
+    let mut artist_match = Match::new(entity.score, artist);
+    if let Some(disambiguation) = entity.disambiguation {
+        artist_match.set_disambiguation(disambiguation);
+    }
+
+    artist_match
+}
+
 fn from_search_release_group_response_release_group(
     entity: SearchReleaseGroupResponseReleaseGroup,
 ) -> Match<Album> {

src/tui/lib/interface/musicbrainz/mod.rs

@@ -3,11 +3,12 @@
 #[cfg(test)]
 use mockall::automock;
 
-use musichoard::collection::{album::Album, musicbrainz::Mbid};
+use musichoard::collection::{album::Album, artist::Artist, musicbrainz::Mbid};
 
 /// Trait for interacting with the MusicBrainz API.
 #[cfg_attr(test, automock)]
 pub trait IMusicBrainz {
+    fn search_artist(&mut self, name: &Artist) -> Result<Vec<Match<Artist>>, Error>;
     fn search_release_group(
         &mut self,
         arid: &Mbid,
@@ -19,11 +20,20 @@ pub trait IMusicBrainz {
 pub struct Match<T> {
     pub score: u8,
     pub item: T,
+    pub disambiguation: Option<String>,
 }
 
 impl<T> Match<T> {
     pub fn new(score: u8, item: T) -> Self {
-        Match { score, item }
+        Match {
+            score,
+            item,
+            disambiguation: None,
+        }
+    }
+
+    pub fn set_disambiguation<S: Into<String>>(&mut self, disambiguation: S) {
+        self.disambiguation = Some(disambiguation.into())
     }
 }
 

src/tui/ui/display.rs

@@ -1,9 +1,10 @@
 use musichoard::collection::{
     album::{Album, AlbumDate, AlbumPrimaryType, AlbumSecondaryType, AlbumSeq, AlbumStatus},
+    artist::Artist,
     track::{TrackFormat, TrackQuality},
 };
 
-use crate::tui::lib::interface::musicbrainz::Match;
+use crate::tui::{app::AppPublicMatchesInfo, lib::interface::musicbrainz::Match};
 
 pub struct UiDisplay;
 
@@ -97,18 +98,46 @@ impl UiDisplay {
         }
     }
 
-    pub fn display_matching_info(matching: Option<&Album>) -> String {
+    pub fn display_artist_matching(artist: &Artist) -> String {
-        match matching {
+        format!("Matching artist: {}", &artist.id.name)
-            Some(matching) => format!(
+    }
-                "Matching: {} | {}",
+
-                UiDisplay::display_album_date(&matching.date),
+    pub fn display_album_matching(album: &Album) -> String {
-                &matching.id.title
+        format!(
-            ),
+            "Matching album: {} | {}",
-            None => String::from("Matching: nothing"),
+            UiDisplay::display_album_date(&album.date),
+            &album.id.title
+        )
+    }
+
+    pub fn display_nothing_matching() -> &'static str {
+        "Matching nothing"
+    }
+
+    pub fn display_matching_info(matches: Option<&AppPublicMatchesInfo>) -> String {
+        match matches.as_ref() {
+            Some(kind) => match kind {
+                AppPublicMatchesInfo::Artist(m) => UiDisplay::display_artist_matching(m.matching),
+                AppPublicMatchesInfo::Album(m) => UiDisplay::display_album_matching(m.matching),
+            },
+            None => UiDisplay::display_nothing_matching().to_string(),
         }
     }
 
-    pub fn display_match_string(match_album: &Match<Album>) -> String {
+    pub fn display_artist_match(match_artist: &Match<Artist>) -> String {
+        format!(
+            "{}{} ({}%)",
+            &match_artist.item.id.name,
+            &match_artist
+                .disambiguation
+                .as_ref()
+                .map(|d| format!(" ({d})"))
+                .unwrap_or_default(),
+            match_artist.score,
+        )
+    }
+
+    pub fn display_album_match(match_album: &Match<Album>) -> String {
         format!(
             "{:010} | {} [{}] ({}%)",
             UiDisplay::display_album_date(&match_album.item.date),

src/tui/ui/matches.rs

@@ -1,23 +1,70 @@
-use musichoard::collection::album::Album;
+use musichoard::collection::{album::Album, artist::Artist};
 use ratatui::widgets::{List, ListItem};
 
-use crate::tui::{app::WidgetState, lib::interface::musicbrainz::Match, ui::display::UiDisplay};
+use crate::tui::{
+    app::{AppPublicMatchesInfo, WidgetState},
+    lib::interface::musicbrainz::Match,
+    ui::display::UiDisplay,
+};
 
-pub struct AlbumMatchesState<'a, 'b> {
+pub struct MatchesState<'a, 'b> {
+    pub matching: String,
     pub list: List<'a>,
     pub state: &'b mut WidgetState,
 }
 
-impl<'a, 'b> AlbumMatchesState<'a, 'b> {
+impl<'a, 'b> MatchesState<'a, 'b> {
-    pub fn new(matches: &[Match<Album>], state: &'b mut WidgetState) -> Self {
+    pub fn new(matches: Option<AppPublicMatchesInfo>, state: &'b mut WidgetState) -> Self {
+        match matches {
+            Some(info) => match info {
+                AppPublicMatchesInfo::Artist(m) => Self::artists(m.matching, m.list, state),
+                AppPublicMatchesInfo::Album(m) => Self::albums(m.matching, m.list, state),
+            },
+            None => Self::empty(state),
+        }
+    }
+
+    fn empty(state: &'b mut WidgetState) -> Self {
+        MatchesState {
+            matching: UiDisplay::display_nothing_matching().to_string(),
+            list: List::default(),
+            state,
+        }
+    }
+
+    fn artists(matching: &Artist, matches: &[Match<Artist>], state: &'b mut WidgetState) -> Self {
+        let matching = UiDisplay::display_artist_matching(matching);
+
         let list = List::new(
             matches
                 .iter()
-                .map(UiDisplay::display_match_string)
+                .map(UiDisplay::display_artist_match)
                 .map(ListItem::new)
                 .collect::<Vec<ListItem>>(),
         );
 
-        AlbumMatchesState { list, state }
+        MatchesState {
+            matching,
+            list,
+            state,
+        }
+    }
+
+    fn albums(matching: &Album, matches: &[Match<Album>], state: &'b mut WidgetState) -> Self {
+        let matching = UiDisplay::display_album_matching(matching);
+
+        let list = List::new(
+            matches
+                .iter()
+                .map(UiDisplay::display_album_match)
+                .map(ListItem::new)
+                .collect::<Vec<ListItem>>(),
+        );
+
+        MatchesState {
+            matching,
+            list,
+            state,
+        }
     }
 }

src/tui/ui/minibuffer.rs

@@ -59,7 +59,7 @@ impl Minibuffer<'_> {
             },
             AppState::Matches(public) => Minibuffer {
                 paragraphs: vec![
-                    Paragraph::new(UiDisplay::display_matching_info(public.matching)),
+                    Paragraph::new(UiDisplay::display_matching_info(public.matches.as_ref())),
                     Paragraph::new("q: abort"),
                 ],
                 columns: 2,

src/tui/ui/mod.rs

@@ -14,8 +14,10 @@ use ratatui::{layout::Rect, widgets::Paragraph, Frame};
 use musichoard::collection::{album::Album, Collection};
 
 use crate::tui::{
-    app::{AppPublicState, AppState, Category, IAppAccess, Selection, WidgetState},
+    app::{
-    lib::interface::musicbrainz::Match,
+        AppPublicMatchesInfo, AppPublicState, AppState, Category, IAppAccess, Selection,
+        WidgetState,
+    },
     ui::{
         browse::{
             AlbumArea, AlbumState, ArtistArea, ArtistState, FrameArea, TrackArea, TrackState,
@@ -23,7 +25,7 @@ use crate::tui::{
         display::UiDisplay,
         error::ErrorOverlay,
         info::{AlbumOverlay, ArtistOverlay},
-        matches::AlbumMatchesState,
+        matches::MatchesState,
         minibuffer::Minibuffer,
         overlay::{OverlayBuilder, OverlaySize},
         reload::ReloadOverlay,
@@ -133,15 +135,13 @@ impl Ui {
     }
 
     fn render_matches_overlay(
-        matching: Option<&Album>,
+        matches: Option<AppPublicMatchesInfo>,
-        matches: Option<&[Match<Album>]>,
         state: &mut WidgetState,
         frame: &mut Frame,
     ) {
         let area = OverlayBuilder::default().build(frame.size());
-        let matching_string = UiDisplay::display_matching_info(matching);
+        let st = MatchesState::new(matches, state);
-        let st = AlbumMatchesState::new(matches.unwrap_or_default(), state);
+        UiWidget::render_overlay_list_widget(&st.matching, st.list, st.state, true, area, frame)
-        UiWidget::render_overlay_list_widget(&matching_string, st.list, st.state, true, area, frame)
     }
 
     fn render_error_overlay<S: AsRef<str>>(title: S, msg: S, frame: &mut Frame) {
@@ -167,7 +167,7 @@ impl IUi for Ui {
         match state {
             AppState::Info(_) => Self::render_info_overlay(collection, selection, frame),
             AppState::Matches(public) => {
-                Self::render_matches_overlay(public.matching, public.matches, public.state, frame)
+                Self::render_matches_overlay(public.matches, public.state, frame)
             }
             AppState::Reload(_) => Self::render_reload_overlay(frame),
             AppState::Error(msg) => Self::render_error_overlay("Error", msg, frame),
@@ -185,15 +185,46 @@ mod tests {
     };
 
     use crate::tui::{
-        app::{AppPublic, AppPublicInner, AppPublicMatches, Delta},
+        app::{
+            AppPublic, AppPublicAlbumMatches, AppPublicArtistMatches, AppPublicInner,
+            AppPublicMatches, Delta,
+        },
+        lib::interface::musicbrainz::Match,
         testmod::COLLECTION,
         tests::terminal,
     };
 
     use super::*;
 
+    impl<'app> AppPublicArtistMatches<'app> {
+        fn get(&self) -> AppPublicArtistMatches<'app> {
+            AppPublicArtistMatches {
+                matching: self.matching,
+                list: self.list,
+            }
+        }
+    }
+
+    impl<'app> AppPublicAlbumMatches<'app> {
+        fn get(&self) -> AppPublicAlbumMatches<'app> {
+            AppPublicAlbumMatches {
+                matching: self.matching,
+                list: self.list,
+            }
+        }
+    }
+
+    impl<'app> AppPublicMatchesInfo<'app> {
+        fn get(&self) -> AppPublicMatchesInfo<'app> {
+            match self {
+                Self::Artist(a) => Self::Artist(a.get()),
+                Self::Album(a) => Self::Album(a.get()),
+            }
+        }
+    }
+
     // Automock does not support returning types with generic lifetimes.
-    impl IAppAccess for AppPublic<'_> {
+    impl<'app> IAppAccess for AppPublic<'app> {
         fn get(&mut self) -> AppPublic {
             AppPublic {
                 inner: AppPublicInner {
@@ -206,8 +237,7 @@ mod tests {
                     AppState::Reload(()) => AppState::Reload(()),
                     AppState::Search(s) => AppState::Search(s),
                     AppState::Matches(ref mut m) => AppState::Matches(AppPublicMatches {
-                        matching: m.matching,
+                        matches: m.matches.as_mut().map(|k| k.get()),
-                        matches: m.matches,
                         state: m.state,
                     }),
                     AppState::Error(s) => AppState::Error(s),
@@ -217,26 +247,35 @@ mod tests {
         }
     }
 
+    fn public_inner<'app>(
+        collection: &'app Collection,
+        selection: &'app mut Selection,
+    ) -> AppPublicInner<'app> {
+        AppPublicInner {
+            collection,
+            selection,
+        }
+    }
+
+    fn artist_matches<'app>(
+        matching: &'app Artist,
+        list: &'app [Match<Artist>],
+    ) -> AppPublicMatchesInfo<'app> {
+        AppPublicMatchesInfo::Artist(AppPublicArtistMatches { matching, list })
+    }
+
+    fn album_matches<'app>(
+        matching: &'app Album,
+        list: &'app [Match<Album>],
+    ) -> AppPublicMatchesInfo<'app> {
+        AppPublicMatchesInfo::Album(AppPublicAlbumMatches { matching, list })
+    }
+
     fn draw_test_suite(collection: &Collection, selection: &mut Selection) {
         let mut terminal = terminal();
 
-        let album = Album::new(
-            AlbumId::new("An Album"),
-            AlbumDate::new(Some(1990), Some(5), None),
-            Some(AlbumPrimaryType::Album),
-            vec![AlbumSecondaryType::Live, AlbumSecondaryType::Compilation],
-        );
-
-        let album_match = Match {
-            score: 80,
-            item: album.clone(),
-        };
-
         let mut app = AppPublic {
-            inner: AppPublicInner {
+            inner: public_inner(collection, selection),
-                collection,
-                selection,
-            },
             state: AppState::Browse(()),
         };
         terminal.draw(|frame| Ui::render(&mut app, frame)).unwrap();
@@ -250,26 +289,6 @@ mod tests {
         app.state = AppState::Search("");
         terminal.draw(|frame| Ui::render(&mut app, frame)).unwrap();
 
-        let album_matches = [album_match.clone(), album_match.clone()];
-        let mut widget_state = WidgetState::default();
-        widget_state.list.select(Some(0));
-
-        app.state = AppState::Matches(AppPublicMatches {
-            matching: Some(&album),
-            matches: Some(&album_matches),
-            state: &mut widget_state,
-        });
-        terminal.draw(|frame| Ui::render(&mut app, frame)).unwrap();
-
-        let mut widget_state = WidgetState::default();
-
-        app.state = AppState::Matches(AppPublicMatches {
-            matching: None,
-            matches: None,
-            state: &mut widget_state,
-        });
-        terminal.draw(|frame| Ui::render(&mut app, frame)).unwrap();
-
         app.state = AppState::Error("get rekt scrub");
         terminal.draw(|frame| Ui::render(&mut app, frame)).unwrap();
 
@@ -317,4 +336,86 @@ mod tests {
 
         draw_test_suite(artists, &mut selection);
     }
+
+    #[test]
+    fn draw_empty_matches() {
+        let collection = &COLLECTION;
+        let mut selection = Selection::new(collection);
+
+        let mut terminal = terminal();
+
+        let mut widget_state = WidgetState::default();
+
+        let mut app = AppPublic {
+            inner: public_inner(collection, &mut selection),
+            state: AppState::Matches(AppPublicMatches {
+                matches: None,
+                state: &mut widget_state,
+            }),
+        };
+        terminal.draw(|frame| Ui::render(&mut app, frame)).unwrap();
+    }
+
+    #[test]
+    fn draw_artist_matches() {
+        let collection = &COLLECTION;
+        let mut selection = Selection::new(collection);
+
+        let mut terminal = terminal();
+
+        let artist = Artist::new(ArtistId::new("an artist"));
+
+        let artist_match = Match {
+            score: 80,
+            item: artist.clone(),
+            disambiguation: None,
+        };
+
+        let list = [artist_match.clone(), artist_match.clone()];
+        let mut widget_state = WidgetState::default();
+        widget_state.list.select(Some(0));
+
+        let mut app = AppPublic {
+            inner: public_inner(collection, &mut selection),
+            state: AppState::Matches(AppPublicMatches {
+                matches: Some(artist_matches(&artist, &list)),
+                state: &mut widget_state,
+            }),
+        };
+        terminal.draw(|frame| Ui::render(&mut app, frame)).unwrap();
+    }
+
+    #[test]
+    fn draw_album_matches() {
+        let collection = &COLLECTION;
+        let mut selection = Selection::new(collection);
+
+        let mut terminal = terminal();
+
+        let album = Album::new(
+            AlbumId::new("An Album"),
+            AlbumDate::new(Some(1990), Some(5), None),
+            Some(AlbumPrimaryType::Album),
+            vec![AlbumSecondaryType::Live, AlbumSecondaryType::Compilation],
+        );
+
+        let album_match = Match {
+            score: 80,
+            item: album.clone(),
+            disambiguation: None,
+        };
+
+        let list = [album_match.clone(), album_match.clone()];
+        let mut widget_state = WidgetState::default();
+        widget_state.list.select(Some(0));
+
+        let mut app = AppPublic {
+            inner: public_inner(collection, &mut selection),
+            state: AppState::Matches(AppPublicMatches {
+                matches: Some(album_matches(&album, &list)),
+                state: &mut widget_state,
+            }),
+        };
+        terminal.draw(|frame| Ui::render(&mut app, frame)).unwrap();
+    }
 }