but with this you must know what you want it to start with. If I read it right, the op is talking about organizing/renaming by the first artist in the list, he cares not about which one it is. I think it's rather likely that the first artist will also be the primary artist, or as I like tho think of it, the host artist.
for example, There's a song with Norah Jones and Dolly Parton together. Both are major names, but since Norah was the artist holding the concert, she's the Host and I consider it to be her song. In my collection she is the first name in the artist list.