Which has more acts, Die Walküre or La fille du régiment?
La fille du régiment La fille du régiment ("The Daughter of the Regiment") is an opéra comique in two acts by Gaetano Donizetti, set to a French libretto by Jules-Henri Vernoy de Saint-Georges and Jean-François Bayard. It was first performed on 11 February 1840 by the Paris Opéra-Comique at the Salle de la Bourse.
La Rose, la violette et le papillon La Rose, la violette et le papillon ("The Rose, the Violet, and the Butterfly") is a ballet "divertissement" in one act, with choreography by Marius Petipa, and music by Duke Peter Georgievich of Oldenburg. The libretto was by Jules Perrot.