How to tag a compilation album contains multiple artists on each track?
Solution 1:
I would suggest changing your music player.
Have a look at gmusicbrowser: "An open-source jukebox for large collections of mp3/ogg/flac/mpc/ape files, written in perl", available in the Software Center.
gmusicbrowser allows you to tag each track with multiple entries for artist and genre (and more). That means that you can tag Track 1 with Artist 1; Artist 2 under Track Artist, and when you browse your artists only two entries, Artist 1 and Artist 2 will show -- not Artist 1; Artist 2.