diff --git a/src/library/beets.rs b/src/library/beets.rs
index 26aab1c..d45599d 100644
--- a/src/library/beets.rs
+++ b/src/library/beets.rs
@@ -78,32 +78,6 @@ pub struct Beets {
     executor: Box<dyn BeetsExecutor>,
 }
 
-pub struct SystemExecutor {
-    bin: String,
-}
-
-impl SystemExecutor {
-    pub fn new(bin: &str) -> SystemExecutor {
-        SystemExecutor {
-            bin: bin.to_string(),
-        }
-    }
-}
-
-impl Default for SystemExecutor {
-    fn default() -> Self {
-        SystemExecutor::new("beet")
-    }
-}
-
-impl BeetsExecutor for SystemExecutor {
-    fn exec(&mut self, arguments: Vec<String>) -> Result<Vec<String>, Error> {
-        let output = Command::new(&self.bin).args(arguments).output()?;
-        let output = std::str::from_utf8(&output.stdout)?;
-        Ok(output.split('\n').map(|s| s.to_string()).collect())
-    }
-}
-
 #[derive(Debug, Hash, Eq, PartialEq)]
 struct AlbumId {
     artist: String,
@@ -206,6 +180,32 @@ impl Library for Beets {
     }
 }
 
+pub struct SystemExecutor {
+    bin: String,
+}
+
+impl SystemExecutor {
+    pub fn new(bin: &str) -> SystemExecutor {
+        SystemExecutor {
+            bin: bin.to_string(),
+        }
+    }
+}
+
+impl Default for SystemExecutor {
+    fn default() -> Self {
+        SystemExecutor::new("beet")
+    }
+}
+
+impl BeetsExecutor for SystemExecutor {
+    fn exec(&mut self, arguments: Vec<String>) -> Result<Vec<String>, Error> {
+        let output = Command::new(&self.bin).args(arguments).output()?;
+        let output = std::str::from_utf8(&output.stdout)?;
+        Ok(output.split('\n').map(|s| s.to_string()).collect())
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;