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.
The Phantom (play) The Phantom is a two act melodrama written by Dion Boucicault. It was originally titled "The Vampire" when it was first performed at the Princess's Theatre in London in 1852. Boucicault renamed it "The Phantom" when he went to the United States, where it opened in Philadelphia in 1856. The play tells the story of two different encounters with a mysterious phantom.