Artist vs. AlbumArtist

[simoncn]

(15-08-2012 15:39)bubbleguuum Wrote:  Not that compilation doesn't imply an AlbumArtist tag. Take for example a "best of" Sting where every track has Artist = Sting. That's why compilations generally require a separate "COMPILATION" tag to mark them as such and to be able to display only compilations (subtree 4)

I don't understand why this needs to be a special tag. Isn't it just another Genre value that could be selected to view only your compilations? Does the COMPILATION tag have any semantics that are different from GENRE=Compilation?