diff --git a/src/core/collection/artist.rs b/src/core/collection/artist.rs
index 639577a..33ff270 100644
--- a/src/core/collection/artist.rs
+++ b/src/core/collection/artist.rs
@@ -14,7 +14,7 @@ use super::album::Album;
 use super::merge::{Merge, MergeSorted};
 
 // FIXME: these imports are not acceptable
-use crate::Error;
+use crate::core::musichoard::Error;
 
 /// An object with the [`IMbid`] trait contains a [MusicBrainz
 /// Identifier](https://musicbrainz.org/doc/MusicBrainz_Identifier) (MBID).
diff --git a/src/core/musichoard/mod.rs b/src/core/musichoard/mod.rs
index 9c5251b..716c15b 100644
--- a/src/core/musichoard/mod.rs
+++ b/src/core/musichoard/mod.rs
@@ -1,18 +1,16 @@
+use std::fmt::{self, Display};
 use std::{collections::HashMap, mem};
 
 use paste::paste;
 
 use super::collection::{
     album::{Album, AlbumId},
-    artist::{Artist, ArtistId},
+    artist::{Artist, ArtistId, InvalidUrlError},
     track::{Quality, Track, TrackId},
     Collection, Merge,
 };
-use super::database::IDatabase;
-use super::library::{ILibrary, Item, Query};
-
-// FIXME: should not be importing this error.
-use crate::Error;
+use super::database::{self, IDatabase};
+use super::library::{self, ILibrary, Item, Query};
 
 /// The Music Hoard. It is responsible for pulling information from both the library and the
 /// database, ensuring its consistent and writing back any changes.
@@ -372,6 +370,71 @@ impl<LIB, DB> MusicHoardBuilder<LIB, DB> {
     }
 }
 
+/// Error type for `musichoard`.
+#[derive(Debug, PartialEq, Eq)]
+pub enum Error {
+    /// The [`MusicHoard`] is not able to read/write its in-memory collection.
+    CollectionError(String),
+    /// The [`MusicHoard`] failed to read/write from/to the library.
+    LibraryError(String),
+    /// The [`MusicHoard`] failed to read/write from/to the database.
+    DatabaseError(String),
+    /// The [`MusicHoard`] failed to parse a user-provided URL.
+    UrlParseError(String),
+    /// The user-provided URL is not valid.
+    InvalidUrlError(String),
+}
+
+impl Display for Error {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        match *self {
+            Self::CollectionError(ref s) => write!(f, "failed to read/write the collection: {s}"),
+            Self::LibraryError(ref s) => write!(f, "failed to read/write from/to the library: {s}"),
+            Self::DatabaseError(ref s) => {
+                write!(f, "failed to read/write from/to the database: {s}")
+            }
+            Self::UrlParseError(ref s) => write!(f, "failed to parse a user-provided URL: {s}"),
+            Self::InvalidUrlError(ref s) => write!(f, "user-provided URL is invalid: {s}"),
+        }
+    }
+}
+
+impl From<library::Error> for Error {
+    fn from(err: library::Error) -> Error {
+        Error::LibraryError(err.to_string())
+    }
+}
+
+impl From<database::LoadError> for Error {
+    fn from(err: database::LoadError) -> Error {
+        Error::DatabaseError(err.to_string())
+    }
+}
+
+impl From<database::SaveError> for Error {
+    fn from(err: database::SaveError) -> Error {
+        Error::DatabaseError(err.to_string())
+    }
+}
+
+impl From<url::ParseError> for Error {
+    fn from(err: url::ParseError) -> Error {
+        Error::UrlParseError(err.to_string())
+    }
+}
+
+impl From<uuid::Error> for Error {
+    fn from(err: uuid::Error) -> Error {
+        Error::UrlParseError(err.to_string())
+    }
+}
+
+impl From<InvalidUrlError> for Error {
+    fn from(err: InvalidUrlError) -> Error {
+        Error::InvalidUrlError(err.to_string())
+    }
+}
+
 #[cfg(test)]
 pub mod testmod;
 
diff --git a/src/lib.rs b/src/lib.rs
index b5103bb..d9329b3 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -3,8 +3,6 @@
 // FIXME: make private and only provide via re-exports.
 pub mod core;
 
-use std::fmt::{self, Display};
-
 // FIXME: validate the re-exports.
 pub use core::database;
 pub use core::library;
@@ -12,82 +10,13 @@ pub use core::library;
 // FIXME: validate the re-exports.
 pub use core::collection::{
     album::{Album, AlbumId},
-    artist::{
-        Artist, ArtistId, ArtistProperties, Bandcamp, InvalidUrlError, MusicBrainz, MusicButler,
-        Qobuz,
-    },
+    artist::{Artist, ArtistId, ArtistProperties, Bandcamp, MusicBrainz, MusicButler, Qobuz},
     track::{Format, Quality, Track, TrackId},
     Collection,
 };
 
 // FIXME: validate the re-exports
-pub use core::musichoard::{MusicHoard, MusicHoardBuilder, NoDatabase, NoLibrary};
-
-// FIXME: this should be in the musichoard module.
-/// Error type for `musichoard`.
-#[derive(Debug, PartialEq, Eq)]
-pub enum Error {
-    /// The [`MusicHoard`] is not able to read/write its in-memory collection.
-    CollectionError(String),
-    /// The [`MusicHoard`] failed to read/write from/to the library.
-    LibraryError(String),
-    /// The [`MusicHoard`] failed to read/write from/to the database.
-    DatabaseError(String),
-    /// The [`MusicHoard`] failed to parse a user-provided URL.
-    UrlParseError(String),
-    /// The user-provided URL is not valid.
-    InvalidUrlError(String),
-}
-
-impl Display for Error {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        match *self {
-            Self::CollectionError(ref s) => write!(f, "failed to read/write the collection: {s}"),
-            Self::LibraryError(ref s) => write!(f, "failed to read/write from/to the library: {s}"),
-            Self::DatabaseError(ref s) => {
-                write!(f, "failed to read/write from/to the database: {s}")
-            }
-            Self::UrlParseError(ref s) => write!(f, "failed to parse a user-provided URL: {s}"),
-            Self::InvalidUrlError(ref s) => write!(f, "user-provided URL is invalid: {s}"),
-        }
-    }
-}
-
-impl From<library::Error> for Error {
-    fn from(err: library::Error) -> Error {
-        Error::LibraryError(err.to_string())
-    }
-}
-
-impl From<database::LoadError> for Error {
-    fn from(err: database::LoadError) -> Error {
-        Error::DatabaseError(err.to_string())
-    }
-}
-
-impl From<database::SaveError> for Error {
-    fn from(err: database::SaveError) -> Error {
-        Error::DatabaseError(err.to_string())
-    }
-}
-
-impl From<url::ParseError> for Error {
-    fn from(err: url::ParseError) -> Error {
-        Error::UrlParseError(err.to_string())
-    }
-}
-
-impl From<uuid::Error> for Error {
-    fn from(err: uuid::Error) -> Error {
-        Error::UrlParseError(err.to_string())
-    }
-}
-
-impl From<InvalidUrlError> for Error {
-    fn from(err: InvalidUrlError) -> Error {
-        Error::InvalidUrlError(err.to_string())
-    }
-}
+pub use core::musichoard::{Error, MusicHoard, MusicHoardBuilder, NoDatabase, NoLibrary};
 
 #[cfg(test)]
 #[macro_use]