diff --git a/beetsplug/deezer.py b/beetsplug/deezer.py
index 6ea172631..629c87bd4 100644
--- a/beetsplug/deezer.py
+++ b/beetsplug/deezer.py
@@ -187,16 +187,20 @@ class DeezerPlugin(SearchApiMetadataSourcePlugin[IDResponse]):
 
         :param track_data: Deezer Track object dict
         """
-        artist, artist_id = self.get_artist(
-            track_data.get("contributors", [track_data["artist"]])
-        )
+        contributors = track_data.get("contributors")
+        if contributors is None and (artist_data := track_data.get("artist")):
+            contributors = [artist_data]
+        if contributors is not None:
+            artist, artist_id = self.get_artist(contributors)
+        else:
+            artist, artist_id = None, None
         return TrackInfo(
             title=track_data["title"],
             track_id=track_data["id"],
             deezer_track_id=track_data["id"],
             isrc=track_data.get("isrc"),
             artist=artist,
-            artist_id=str(artist_id),
+            artist_id=str(artist_id) if artist_id is not None else None,
             length=track_data["duration"],
             index=track_data.get("track_position"),
             medium=track_data.get("disk_number"),
diff --git a/docs/changelog.rst b/docs/changelog.rst
index e75ac5ca0..7a92d72e2 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -56,6 +56,11 @@ Bug fixes
   copyright/rights-statement text verbatim. It's now normalized to a concise
   label name, stripping copyright markers, years, and corporate, licensing, and
   territorial boilerplate. Affects both album and track metadata. :bug:`6796`
+- :doc:`plugins/deezer`: Track conversion no longer assumes the API sends both
+  ``contributors`` and ``artist``. The fallback to ``artist`` was evaluated even
+  when ``contributors`` was present, so a track payload without ``artist``
+  raised ``KeyError``. Albums were already guarded; this fixes the remaining
+  call site. :bug:`4339`
 
 ..
     For plugin developers
diff --git a/test/plugins/test_deezer.py b/test/plugins/test_deezer.py
index e62514824..fb5cffaa6 100644
--- a/test/plugins/test_deezer.py
+++ b/test/plugins/test_deezer.py
@@ -39,3 +39,36 @@ class TestSearchQuery:
         )
 
         assert query == 'album:"Album"'
+
+
+class TestGetTrack:
+    def track_data(self, **fields):
+        return {
+            "id": 1,
+            "title": "Title",
+            "duration": 100,
+            "link": "https://www.deezer.com/track/1",
+            **fields,
+        }
+
+    def test_uses_contributors_when_artist_is_missing(self, plugin):
+        track = plugin._get_track(
+            self.track_data(contributors=[{"id": 2, "name": "Artist"}])
+        )
+
+        assert track.artist == "Artist"
+        assert track.artist_id == "2"
+
+    def test_falls_back_to_artist_without_contributors(self, plugin):
+        track = plugin._get_track(
+            self.track_data(artist={"id": 2, "name": "Artist"})
+        )
+
+        assert track.artist == "Artist"
+        assert track.artist_id == "2"
+
+    def test_tolerates_missing_artist_and_contributors(self, plugin):
+        track = plugin._get_track(self.track_data())
+
+        assert track.artist is None
+        assert track.artist_id is None