Yes planned on launching a massive anniversary tour in 2004, but were forced to call it off when frontman Jon Anderson became ill. They waited around a few years, but by 2008 they just couldn't wait any longer and they recruited Benoit David, lead singer of the Canadian Yes tribute band Close to the Edge. It meant playing slightly smaller venues than normal, but they made it up by playing a ridiculous amount of shows a year. With Anderson out of the equation they were free to become workhorses again. The pace proved too much for David, who eventually bowed out after experiencing voice troubles. That wasn't going to stop Yes. They recruited a new guy named Jon Davison and carried on like nothing happened. Nothing stops the Yes train. Nothing.