what he is describng that bey does sounds more like co producing credit to me, not co writing....if what he is saying is the case then most songs would be..co written by the artist my favorite part of a lot of songs are the ad libs, which the artist normally creates spontaneously while singing it, but they dont get co writing credits for that...however when u become an artist of bey's caliber you can kind of get away with it because people want to continue to work with you.....