The Daughter of the Regiment () is a comic opera in two acts. The French libretto was written by Jules-Henri Vernoy de Saint-Georges and Jean-François Bayard. The music was composed by Gaetano Donizetti. The opera is famous for the tenor aria ""Ah! mes amis, quel jour de fête!"" It features nine high Cs. The opera was first performed on 11 February 1840 by the Paris Opéra-Comique at the Salle de la Bourse. It was performed at the Metropolitan Opera in 1902/03. The role of Marie was a favorite with Jenny Lind.