Mitridate, re di Ponto (Mithridates, King of Pontus), K. 87 (74a), is an opera seria in three acts by the young Wolfgang Amadeus Mozart. The libretto is by , after Giuseppe Parini's Italian translation of Jean Racine's play Mithridate. Mozart wrote Mitridate while touring Italy in 1770. The musicologist Daniel E. Freeman has demonstrated that it was composed with close reference to the opera La Nitteti by Josef Mysliveček. The latter was the opera being prepared for production in Bologna when Mozart met Mysliveček for the first time with his father in March 1770. Mysliveček visited the Mozarts frequently in Bologna during the summer of 1770 while Wolfgang was working on Mitridate. Mozart gained expertise in composition from his older friend and also incorporated some of his musical motifs into his own operatic setting. The opera was first performed at the Teatro Regio Ducale, Milan, on 26 December 1770 (at the Milan Carnival). It was a success, performed 21 times despite doubts because of Mozart's extreme youth – he was 14 at the time. No revival took place until the 20th century. The opera features virtuoso arias for the principal roles, but only two ensemble numbers: the act 2 ending duet between Aspasia and Sifare ("Se viver non degg’io"), and the brief quintet that ends the opera in a manner characteristic of standard baroque opera seria where the opera ends with a short coro or tutti number. Roles Synopsis Place: around the Crimean port of Nymphæum Time: 63BC during the conflict between Rome and Pontus Prologue Mitridate, having suffered a heavy defeat in battle, is presumed dead. This incorrect news is passed by Arbate, the Governor, to Aspasia (Mitridate's fiancée) and to Farnace and Sifare (Mitridate's sons). Act 1 Scene 1 Arbate, the governor of Nymphæum, welcomes Sifare. We learn that Sifare resents his brother, Farnace, because of his brother’s strong ties with their enemies, the Romans. Arbate pledges his loyalty to Sifare. Aspasia pleads for Sifare to help her against advances by Farnace. He accepts her plea and reveals his love for her. Scene 2 Farnace makes his advances to Aspasia. She refuses, supported by Sifare, who protects her from his forceful brother. News arrives that Mitridate is alive and is approaching the city. Arbate urges the brothers to conceal their differences and greet their father. The brothers agree to hide their feelings for Aspasia. Farnace conspires with Marzio,