Do both Simon Boccanegra and Le roi d'Ys have the same number of acts?
Simon Boccanegra Simon Boccanegra (] ) is an opera with a prologue and three acts by Giuseppe Verdi to an Italian libretto by Francesco Maria Piave, based on the play "Simón Bocanegra" (1843) by Antonio García Gutiérrez, whose play "El trovador" had been the basis for Verdi's 1853 opera, "Il trovatore".
Daphnis et Alcimadure Daphnis et Alcimadure (in Occitan classical norm, Dafnís e Alcimadura, or according to the original libretto spelling, Daphnis e Alcimaduro) is an opera by the Baroque violinist, conductor and composer Jean-Joseph Cassanéa de Mondonville to a libretto in the Occitan language, written by the composer himself and loosely inspired by La Fontaine's fable bearing the same title. It takes the form of a pastorale in three acts and was later endowed with a prologue in French entitled "Les jeux floraux", to a libretto by Claude-Henri de Fusée de Voisenon.