tradrad
Pro
this has obviously been beaten to death, but having had a substantial enough career making records i need to reiterate the also obvious: being a sideman/hired gun is a SERVICE industry...job entails serving the artist and most importantly the song. if the artist or producer have a 'thing' they're going for, the job is to help realize it. it also helps to have some insight into what the artist is about or what the producer's track record is...if you're doing a track and craig street is behind it, you can bet you're not gonna be playing a huge double 26" kick set with lotsa china cymbals
always bring what you think is right for the session, and then some 'just the opposite' cause you never know! chances are good you'll wind up in the middle somewhere.