I think you have to go into "Get Info" and change where it says "Album Artist".
I have a lot of soundtracks, and I like to keep them together, so I have the artist who the artist is, but under "Various artists". Previously, when I just had the artist, it went under the artist's folder, but now it doesn't seem to.
Britney Spears · Justin Timberlake
Hilary Duff · Taylor Swift · Lana Del Rey · Coldplay