The Go-Go's perform "Our Lips Are Sealed"

One of the most successful all-female bands in rock 'n' roll history, the Go-Go's have added another credit to their long resume: Their songs are featured in a new Broadway musical, "Head Over Heels." Recently four of the band's members – Charlotte Caffey, Belinda Carlisle, Kathy Valentine and Jane Wiedlin – surprised a preview audience at the Hudson Theatre in New York by taking to the stage and bringing the curtain down with a rousing rendition of "Our Lips Are Sealed."