Which opera has more acts, Faust or Mignon?
Mignon Mignon is an "opéra comique" (or opera in its second version) in three acts by Ambroise Thomas. The original French libretto was by Jules Barbier and Michel Carré, based on Goethe's novel "Wilhelm Meisters Lehrjahre". The Italian version was translated by Giuseppe Zaffira. The opera is mentioned in James Joyce's "The Dead" ("Dubliners") and Willa Cather's "The Professor's House". Thomas's goddaughter Mignon Nevada was named after the main character.
Arlecchino (opera) Arlecchino, "oder Die Fenster" ("Harlequin, or The Windows", is a one-act opera with spoken dialog by Ferruccio Busoni, with a libretto in German, composed in 1913. He completed the music for the opera while living in Zurich in 1916. It is a number opera written in neo-classical style and includes ironic allusions to operatic conventions and situations typical of the late 18th and early 19th centuries. It even includes a parody of a duel.