I got to watch Udo Dirkschneider (from U.D.O. and Accept) live on his North American tour last week in Poughkeepsie, NY. One thing I realized about him (apart from the obvious fact his voice is perfect for heavy metal even at age 61), is that he really enjoys listening to the other musicians (the rest of the band!) he has on stage with him, and he has hand motions that show he is following and anticipating the music in his head.