Quote Originally Posted by RSF
Well... it's not that it's a bad idea, but if I wanted to make a search by artist to get all the songs he's in, how would that work out ???
I think putting these names into Credits fields would work. To find all recordings with the artist you could create an Advanced search query:

Artist = <artist of interest> OR
Credit = <artist of interest>

and that would give a list that you need. And of course, Credits section of album page would display something like

Producer: XXXX
Featuring: YYYY
Presenting: ZZZZ

How does it sound?

Andrei