On the last tours the band had to cancel/reschedule a few gigs because of Mick's health. They did play a few gigs on the last tour without Bobby and Lisa if I remember correctly. I don't think they would cancel a show with one of the side musicians being ill. But I wonder what would happen if Chuck wouldn't be able to play some night....We have discussed Chuck's role in the Stones live performance many times here on this board and it's obvious that for the band members he is more than just a side musician, some even call him kind of a "musical director", no matter if we like this thought or not. So what do you think? Would they cancel a show? Would they try and hire another piano player? Or would they just go out and play dirty rock'n roll without keyboards?