Which has more acts, Hans Heiling or La favorite?
La favorite La Favorite (The Favourite, sometimes referred to by its Italian title: La favorita) is a grand opera in four acts by Gaetano Donizetti to a French-language libretto by Alphonse Royer and Gustave Vaëz, based on the play "Le comte de Comminges" by Baculard d'Arnaud. It premiered on December 2, 1840 at the Académie Royale de Musique (Salle Le Peletier) in Paris, France.
La bohème (Leoncavallo) La bohème is an Italian opera in four acts, with music and libretto by Ruggero Leoncavallo, based on "Scènes de la vie de bohème" by Henri Murger. The opera received a successful premiere at the Teatro la Fenice, Venice on 6 May 1897.