• Giovanni Battista Pergolesi. Opera seria in three acts. 1734.
• Libretto by Pietro Metastasio.
• First performance at the Teatro S Bartolomeo, Naples, on 25th October 1734.

Pergolesi’s setting of an adapted version of Metastasio’s libretto, the third of his four opere serie, was written to celebrate the birthday of the Queen Mother, Elisabeth Farnese, after the accession to power in Naples of Charles Bourbon.