James Denton coaxes his Desperate Housewives costar Teri Hatcher onstage to sing the Wreckers's song "Leave the Pieces" during a set by Band from TV at TV Guide's bash at Les Deux. So, did Hatcher have to audition for the singing gig? "I literally just said, 'Hey, you should come sing with us,'" Denton told PEOPLE. "It was really simple. She's a really good singer."