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".
Ballo della Regina Ballo della Regina is a one-act ballet choreographed by George Balanchine to music by Giuseppe Verdi. It is a set of variations set to ballet music (titled "La Peregrina") that Verdi cut from Act 3 of the original 1867 version of his opera "Don Carlos". Its premiere performance was on 12 January 1978, by the New York City Ballet at New York State Theater in Lincoln Center.