Whenever I think I'm getting a grip with tagging, something crops up and I end up messing about and further confusing myself.
I use Foobar and iTunes for listening to music on computer and have an iPod.
MP3Tag is of course used for tagging and deleting unwanted stuff like PUBLISHER etc and I am reasonably comfortable with what to do.
I now notice that I have generated ALBUM ARTIST, ALBUMARTIST, DISCOGS_ARTIST_NAME, COMMENT ITUNNORM, ITUNNORM, and CONTENTGROUP tags...................
Can one of you kind fellows advise this old duffer as to which of these he can safely delete bearing in mind that I use MP3Tag, iTunes and have an iPod.