La Clemenza di Tito

La clemenza di Tito (English: The Clemency of Titus), K. 621, is an opera seria in two acts composed by Wolfgang Amadeus Mozart to an Italian libretto by Caterino Mazzolà , after Metastasio. It was started after the bulk of The Magic Flute, the last opera that Mozart worked on, was already written (Mozart completed The Magic Flute after the Prague premiere of Tito on 6 September 1791).
In July 1791, the last year of his life, Mozart was already well advanced in writing The Magic Flute when he was asked to compose an opera seria. The commission came from the impresario Domenico Guardasoni, who lived in Prague and who had been charged by the Estate of Bohemia with providing a new work to celebrate the coronation of Leopold II, Holy Roman Emperor as King of Bohemia. The ceremony was to take place on 6 September; Guardasoni had been approached about the opera in June. There was not much room to manoeuvre.