Do the operas Don Carlos and Pomone have the same number of acts?
Don Carlos Don Carlos is a five-act grand opera composed by Giuseppe Verdi to a French-language libretto by Joseph Méry and Camille du Locle, based on the dramatic play "Don Carlos, Infant von Spanien" ("Don Carlos, Infante of Spain") by Friedrich Schiller. The opera is usually performed in an Italian translation. In addition, it has been noted by David Kimball that the Fontainebleau scene and auto da fé "were the most substantial of several incidents borrowed from a contemporary play on Philip II by Eugène Cormon".
El retablo de maese Pedro El retablo de maese Pedro ("Master Peter's Puppet Show") is a puppet-opera in one act with a prologue and epilogue, composed by Manuel de Falla to a Spanish libretto based on an episode from "Don Quixote" by Miguel de Cervantes. The libretto is an abbreviation of chapter 26 of the second part of "Don Quixote", with some lines added from other parts of the work. Falla composed this opera "in devoted homage to the glory of Miguel de Cervantes" and dedicated it to the Princess de Polignac, who commissioned the work. Because of its brief length by operatic standards (about 27 minutes), its very challenging part for a boy opera performer (who has by far the most lines), and its use of puppets, it is not part of the standard operatic repertoire.