Someone from PG should reply to this, or at least put a statement on the website about attribution.

It is a bit of a gray area. PG touts the fact that Brent Mason is one of the players on RB/Real Tracks.

Most likely users of RB are excused from any attribution comments and credits. But this is speculation.

I wouldn't want to go the other way and open the door to lawsuits by claiming that certain studio artists played on a track that used RB.

-Scott