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.
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.