I've had this happen to me, here in WyoBraska. Sometimes it's good, if I am there w/o back up, but it is really strange playing for an audience with brand new back up that does not know the tune/song and gets the "accidental" chords wrong. Usually, I don't go back. It's another reason I won't do contests.........can't take my own back up who knows where I am going or what the tune does. I think these people are rude and don't know it. Who gets to tell them to just shut up? Not me!