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".
Amadis de Gaule (La Borde and Berton) Amadis de Gaule is an opera by the French composers Jean-Benjamin de La Borde and Pierre Montan Berton, first performed at the Académie Royale de Musique, Paris (the Paris Opera) on 26 November 1771. It takes the form of a "tragédie en musique" in five acts. The opera is a new setting of a libretto by Philippe Quinault, originally set by Jean-Baptiste Lully in 1684.