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.
Doktor Faust Doktor Faust is an opera by Ferruccio Busoni with a German libretto by the composer himself, based on the myth of Faust. Busoni worked on the opera, which he intended as his masterpiece, between 1916 and 1924, but it was still incomplete at the time of his death. His pupil Philipp Jarnach finished it. More recently, in 1982, Antony Beaumont completed the opera using sketches by Busoni which were previously thought to have been lost. Nancy Chamness has published an analysis of the libretto to "Doktor Faust" and a comparison with Goethe's version.