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 second-longest run of any musical theatre piece up to that time. H.M.S. Pinafore was Gilbert and Sullivan's fourth operatic collaboration and their first international sensation.
Theatre poster, 1879
Scene from 1886 Savoy Theatre souvenir programme
Illustration of the characters in Act II by D. H. Friston, 1878
Rutland Barrington as A.B.S. Corcoran at the end of Pinafore
Comic opera, sometimes known as light opera, is a sung dramatic work of a light or comic nature, usually with a happy ending and often including spoken dialogue.
Rossini, circa 1810–1815
Poster for a 19th-century production of Orpheus in the Underworld
Scene from H.M.S. Pinafore, 1886 Savoy Theatre souvenir programme
A "toy soldier" from Babes in Toyland, 1903