Orpheus in the Underworld and Orpheus in Hell are English names for Orphée aux enfers (French: [ɔʁfe oz‿ɑ̃fɛʁ]), a comic opera with music by Jacques Offenbach and words by Hector Crémieux and Ludovic Halévy. It was first performed as a two-act "opéra bouffon" at the Théâtre des Bouffes-Parisiens, Paris, on 21 October 1858, and was extensively revised and expanded in a four-act "opéra féerie" version, presented at the Théâtre de la Gaîté, Paris, on 7 February 1874.