Can anyone give me a run-down of what specific tags will constitute a match in the store ? i know song name must be correct and album name, but what abut album artist ? I've run into issues where i have albums, but different artists on that album..... iTunes match does not correct it as the "album artist"field being the same album even though its a "match" this causes headaches, since i must update or change the field afterwards/before . I have tried just checking the "This is part of a compilation" but it didn't work... only after updating the the album artist field works, however i fail to see why iTunes match wouldn't also check this, since (a it IS a match, and b) the album is on the store along with the same different artists on that album.. Since the album names are both correct anyway.