The Importance of Being Unconscious

"I stopped chasing Letterman. I'm going to work on this thing as hard as I can by myself," he says of his early days in showbiz. "It's supposed to be a 10 minute procedure. He had to just not use the laser beam, use the laser, the needle and thread." The singer is now touring with an all-star cast that includes Justin Timberlake for first time since 2009.