page_title: Demetrio (Metastasio)
section_title: Action
hierarchical_section_title: Demetrio (Metastasio) / Action
caption_attribution_description: English: Johann Adolph Hasse - Demetrio - picture from the libretto - Venice 1737
context_page_description: Demetrio is an opera libretto in three acts by Pietro Metastasio. It was first performed to music composed by Antonio Caldara on 4 November 1731 during celebrations of the name day of the Holy Roman Emperor Charles VI in Vienna. Different composers later used it when composing operas named Alceste, Cleonice and Demetrio, rè della Siria. With over fifty settings it was one of Metastasio’s most popular works.
context_section_description: The opera is about the seizure of power by the Seleucid king Demetrius II Nicator after his return from exile. The action takes place in Seleucia. The roles in the opera are:
  Cleonice, Queen of Syria, lover of Alceste
  Alceste, later revealed to be king Demetrio
  Barsene, confidant of Cleonice, secretly in love with Alceste
  Fenicio, councillor, guardian of Alcestes and father of Olinto
  Olinto, councillor, rival of Alceste
  Mitrane, captain of the guard and friend of Fenicio
  The following plot summary is based on the 1734 libretto used in the Brunswick version by Antonio Caldara.
caption: Image from the libretto, music by Johann Adolph Hasse, Venice 1737
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