H.M.S. Pinafore; or, The Lass That Loved a Sailor is a comic opera in two acts, with music by Arthur Sullivan and a libretto by W. S. Gilbert. It opened at the Opera Comique in London on 25 May 1878, and ran for 571 performances, which was the... Wikipedia
Composer: Arthur Sullivan
Librettist: William Schwenck Gilbert
Characters: Cousin Hebe, Bill Bobstay, Mrs. Cripps, and more
First performance: May 25, 1878, Opera Comique, London
Genre: Operetta