Buddy Guy performed his new autobiographical blues song "74 Years Young" on the Tonight Show last night. "I've been all around the world, everywhere is home," Guy sang. "Drink wine with kings and the Rolling Stones. I got a few scars from the battles I won. I'm 74 years young." In the middle he delivers the kind of blistering guitar solo that inspired Eric Clapton to form Cream all those years ago. Guy's been on a non-stop tour for a good 50 years, but this summer he has a handful of particularly cool gigs with B.B. King and J. Geils Band.