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".
Mrs. Jarramie's Genie Mrs. Jarramie's Genie is a one-act comic opera with a libretto by Frank Desprez and music by Alfred Cellier and François Cellier. The piece was first presented at the Savoy Theatre on 14 February 1888, as a curtain raiser to the revival of "H.M.S. Pinafore" (November 1887 – March 1888). It was subsequently presented as a curtain raiser to revivals of "The Pirates of Penzance" (March – June 1888) and "The Mikado" (June – September 1888), and then with "The Yeomen of the Guard" (October 1888 – November 1889).