Are Lulu and Destiny both three-act operas?
Lulu (opera) Lulu (composed from 1929–1935, premièred incomplete in 1937 and complete in 1979) is an opera in three acts by Alban Berg. The German-language libretto was adapted by Berg himself from Frank Wedekind's two "Lulu" plays, "Erdgeist" ("Earth Spirit", 1895) and "Die Büchse der Pandora" ("Pandora's Box", 1904). Berg died before completing the third and final act, and in the following decades, the opera was typically performed incomplete. Since its publication in 1979, however, the Friedrich Cerha orchestration has become popular. Theodor W. Adorno wrote "The opera "Lulu" is one of those works that reveals the extent of its quality the longer and more deeply one immerses oneself in it."
Ernelinde, princesse de Norvège Ernelinde, princesse de Norvège ("Ernelinde, Princess of Norway") is a three-act operatic tragédie lyrique, by the French composer François-André Danican Philidor. The libretto was by Antoine-Alexandre-Henri Poinsinet, after Francesco Silvani's opera libretto "La fede tradita, e vendicata".