Yeah, a few times. Do what the producer tells you to do and you'll be fine. They are the pros in this arena, not you. One bandmember tried to be the boss and it didn't end well. We did the show but weren't asked back, even after he got canned. I guess every show is different and certain protocols must be followed in each situation. Keep your eyes and ears open and your mouth shut (unless you're singing). Hope this helps and break a leg.