 !, is a musical entertainment with a libretto by W. S. Gilbert and music by Frederic Clay that premiered on 22 November 1869 at the Royal Gallery of Illustration.It marked the beginning of a seven-year collaboration between Gilbert and Clay.The piece was a critical and popular success and was revived many times, including at St. George's Hall, London in 1870 and 1874, and in New York in 1880.