Did you know the Stones use a clickstart(metronome)? It's on Chuck's keyboard. It's used to synchronize the light show with the music, I guess. Too bad, it causes them to play it quite slow, they probably took the original album speeds... Some songs just lack energy by it. I'm sure they CAN still play them the way they want to play them, which is probably(I'm not sure, ofcourse) a bit faster. They should drop it. Why can't they synchronize the lightshow instead?