diff --git a/model/tag.go b/model/tag.go
index e1344cb53..743294658 100644
--- a/model/tag.go
+++ b/model/tag.go
@@ -216,11 +216,9 @@ const (
 	TagComposer           TagName = "composer"
 	TagComposerSort       TagName = "composersort"
 	TagComposerCredit     TagName = "composercredit"
-	TagComposersCredit    TagName = "composerscredit"
 	TagLyricist           TagName = "lyricist"
 	TagLyricistSort       TagName = "lyricistsort"
 	TagLyricistCredit     TagName = "lyricistcredit"
-	TagLyricistsCredit    TagName = "lyricistscredit"
 	TagDirector           TagName = "director"
 	TagDirectorCredit     TagName = "directorcredit"
 	TagProducer           TagName = "producer"
@@ -238,7 +236,9 @@ const (
 	TagArranger           TagName = "arranger"
 	TagArrangerCredit     TagName = "arrangercredit"
 	TagPerformer          TagName = "performer"
-	TagPerformerCredit    TagName = "performercredit"
+	// Performer credits are not currently surfaced: performer tags are
+	// `type: pair` ('PERFORMER:instrument') and the matching credit
+	// representation hasn't been designed yet. Tracked separately.
 
 	// ReplayGain
 
diff --git a/resources/mappings.yaml b/resources/mappings.yaml
index 3f15dcd3d..47b799b15 100644
--- a/resources/mappings.yaml
+++ b/resources/mappings.yaml
@@ -58,16 +58,12 @@ main:
     aliases: [ tsoc, txxx:composersort, composersort, soco, wm/composersortorder ]
   composercredit:
     aliases: [ composer_credit, composercredit ]
-  composerscredit:
-    aliases: [ composers_credit, composerscredit ]
   lyricist:
     aliases: [ text, lyricist, ----:com.apple.itunes:lyricist, wm/writer ]
   lyricistsort:
     aliases: [ lyricistsort ]
   lyricistcredit:
     aliases: [ lyricist_credit, lyricistcredit ]
-  lyricistscredit:
-    aliases: [ lyricists_credit, lyricistscredit ]
   conductor:
     aliases: [ tpe3, conductor, ----:com.apple.itunes:conductor, wm/conductor ]
   conductorcredit:
@@ -225,8 +221,6 @@ main:
   performer:
     aliases: [performer]
     type: pair
-  performercredit:
-    aliases: [ performer_credit, performercredit ]
   musicbrainz_performerid:
     aliases: [ txxx:musicbrainz performer id, musicbrainz_performerid, musicbrainz_performer_id, ----:com.apple.itunes:musicbrainz performer id, musicbrainz/performer id ]
     type: pair