Michael Buble handed the mic to a fan at a recent concert, and got quite the surprise. Erin Bellucci is a 21-year-old music student at the University of Delaware. When she got a chance to sing the Etta James classic "At Last," she wowed Buble and the crowd. The moment was captured on camera by Erin's sister, Allie, at New York City's Madison Square Garden. Later, she revisited her performance with guitarist Sam Fredric.