Thespis, the first Gilbert and Sullivan collaboration, debuts.

Thespis, or The Gods Grown Old, is an operatic extravaganza that was the first collaboration between dramatist W. S. Gilbert and composer Arthur Sullivan. No musical score of Thespis was ever published, and most of the music has been lost. Gilbert and Sullivan went on to become the most famous and successful artistic partnership in Victorian England, creating a string of enduring comic opera hits, including H.M.S. Pinafore, The Pirates of Penzance and The Mikado.

Gilbert and Sullivan refers to the Victorian-era theatrical partnership of the dramatist W. S. Gilbert (1836–1911) and the composer Arthur Sullivan (1842–1900) and to the works they jointly created. The two men collaborated on fourteen comic operas between 1871 and 1896, of which H.M.S. Pinafore, The Pirates of Penzance and The Mikado are among the best known.

December 26 is the 360th day of the year in the Gregorian calendar; five days remain until the end of the year.