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".
Le timbre d'argent Le timbre d'argent ("The Silver Bell") is an opéra fantastique in four acts by composer Camille Saint-Saëns to a French libretto by Jules Barbier and Michel Carré. Although completed in 1865, the opera did not receive its premiere performance until 23 February 1877, when it was presented by Albert Vizentini's Théâtre National Lyrique at the Théâtre de la Gaîté in Paris. It includes the well-known aria "Le bonheur est chose légère."