It's clear what tags forms an album, no question there.
Questions are more along the line of:
What cover will be shown for the album, is it the one embedded in the first or last file? Will it change if the particular file is removed.
What year will be shown, and will it change as tracks are added or removed.
Will album length be updated if an album is replaced.
Will date added change if tracks are added later.
"Recipe" for test album:
Four song album
TPE1 & TPE2 = "Test Artist"
TALB="Test Album"
Or should I make it a "Various Artist" comp album?
different TIT2 in all tracks: One, Two, Three, Four
different TYER in all tracks: 2001, 2002, 2003, 2004
different album art in all tracks: 1, 2, 3, 4 "in friendly letters"
different TLEN in all tracks: 1, 2, 3, 4 minutes
Anything else that I should add while I'm at it?