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".
Sinfonía de Antígona Sinfonía de Antígona ("Antigone Symphony") is Carlos Chávez's Symphony No. 1, composed in 1933. The music originated as theatre music to accompany the tragedy of Antigone, hence the title of the symphony. The material was reworked into a single movement and rescored for a large orchestra. It lasts about 11 minutes in performance.