I go with whoever is the album artist even if the song isn't necessarily theirs.

Ex: Bang Bang (feat. Jessie J & Nicki Minaj) - Ariana Grande since I have it on the My Everything deluxe.
Don't You Wanna Stay (feat. Jason Aldean) - Kelly Clarkson since I have it on the Stronger deluxe even
though it is Jason's single originally.

.

Artist & Artist - Song
Artist - Song (with Artist)

One of these two.

If its a duet album I put Artist & Artist
If its a duet with equal featuring of both artists, I put Song (with Artist)

i label things the way i would want to be labelled

It's Carly Rae Jepsen & Owl City