Do both Simon Boccanegra and Le roi d'Ys have the same number of acts?
Le roi d'Ys Le roi d'Ys ("The King of Ys") is an opera in three acts and five tableaux by the French composer Édouard Lalo, to a libretto by Édouard Blau, based on the old Breton legend of the drowned city of Ys. That city was, according to the legend, the capital of the kingdom of Cornouaille.
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.