Monday night, lucky patrons of The Bitter End in New York City were treated to a jam session between Nick Jonas and John Stamos. Jonas sang the Frankie Valli classic "Can't Take My Eyes Off You", while Stamos accompanied him on the drums. The two celebrities were costars in the theater production of Hairspray at the Hollywood Bowl last year. Wow, we can't get over Jonas' voice. He's matured and grown so much since his "Burning Up" days. For those wondering, the Bitter End is a small bar located in the Greenwich Village that features live music every night. Check out the video of the stars' jamming to "Can't Take My Eyes Off You" below:
