Are both A Midsummer Night's Dream and La sonnambula operas?
La sonnambula La sonnambula ("The Sleepwalker") is an opera semiseria in two acts, with music in the "bel canto" tradition by Vincenzo Bellini set to an Italian libretto by Felice Romani, based on a scenario for a "ballet-pantomime" written by Eugène Scribe and choreographed by Jean-Pierre Aumer called "La somnambule, ou L'arrivée d'un nouveau seigneur". The ballet had premiered in Paris in September 1827 at the height of a fashion for stage works incorporating somnambulism.
Diane et Endymion Diane et Endymion ("Diana and Endymion") is a French-language opera by the composer Niccolò Piccinni, first performed at the Académie Royale de Musique, Paris (the Paris Opera) on 7 September 1784. It takes the form of an "opéra" in three acts. The libretto, by Jean-François Espic Chevalier de Liroux, is based on the story of the goddess Diana's love for the shepherd Endymion.