The tag alias #73997 album_cover -> music_cover is pending approval.
Reason: Too specific, for no real reason.
Topic: Tag alias: album_cover -> music_cover
Posted under Tag Alias and Implication Suggestions
I'd say the reverse. A "music cover" can mean a piece of music remade by someone other than the original artist, while an album cover is well known to mean a piece of art to identify an album/music (including singles).