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.
La battaglia di Legnano La battaglia di Legnano ("The Battle of Legnano") is an opera in four acts, with music by Giuseppe Verdi to an Italian-language libretto by Salvadore Cammarano. It was based on the play "La Bataille de Toulouse" by Joseph Méry, later the co-librettist of "Don Carlos".