Do both Die Frau ohne Schatten and Der Wildschütz have three acts?
Der Wildschütz: Der Wildschütz oder Die Stimme der Natur ("The Poacher, or The Voice of Nature") is a German "Komische Oper", or comic opera, in three acts by Albert Lortzing from a libretto by the composer adapted from the comedy "Der Rehbock, oder Die schuldlosen Schuldbewussten" by August von Kotzebue.
i don't know