Gilbert and Sullivan

"Gilbert and Sullivan" (often abbreviated to "G&S") refers to the Victorian-era theatrical partnership of the librettist W.S. Gilbert (1836–1911)[1] and the composer Arthur Sullivan (1842–1900)[2] and to the works they jointly created [3].

Sources

http://en.wikipedia.org/wiki/W._S._Gilbert

https://en.wikipedia.org/wiki/Arthur_Sullivan