Are both the Louise and the La clemenza di Tito operas?
Louise (opera): Louise is an opera ("roman musical" ) in four acts by Gustave Charpentier to an original French libretto by the composer, with some contributions by Saint-Pol-Roux, a symbolist poet and inspiration of the surrealists. La clemenza di Tito: La clemenza di Tito (English: "The Clemency of Titus"), K. 621, is an "opera seria" in two acts composed by Wolfgang Amadeus Mozart to an Italian libretto by Caterino Mazzolà, after Metastasio.
yes