So this woman named Rayna Ford is in the audience for a Paul Simon concert. She yells out that he should play "Duncan" and adds that she learned to play the guitar with that song. What then does Paul Simon do? Does he play it? No, he invites her up on stage to play it. In so doing, he gives the lady the thrill of her life…but don't you kinda wish he'd joined in on the last part and made it a duet?
