Are both pieces The Immortal Hour and L'incoronazione di Poppea an opera?
L'incoronazione di Poppea L'incoronazione di Poppea (SV 308, "The Coronation of Poppaea") is an Italian opera by Claudio Monteverdi, with a libretto by Giovanni Francesco Busenello, first performed at the Teatro Santi Giovanni e Paolo in Venice during the 1643 carnival season. One of the first operas to use historical events and people, it describes how Poppaea, mistress of the Roman emperor Nero, is able to achieve her ambition and be crowned empress. The opera was revived in Naples in 1651, but was then neglected until the rediscovery of the score in 1888, after which it became the subject of scholarly attention in the late 19th and early 20th centuries. Since the 1960s, the opera has been performed and recorded many times.
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.