Il Ruggiero is an opera in three acts composed by Johann Adolph Hasse to a libretto by Pietro Metastasio. It was first staged on 16 October 1771 for the wedding of Archduke Ferdinand Karl with Maria Beatrice d'Este in the Teatro Regio Ducale, Milan. It was both Metastasio's last libretto and Hasse's last opera, as well as the thirty-second Metastasio libretto Hasse had set to music.
Metastasio by Batoni
Johann Adolph Hasse by Balthasar Denner
Pietro Antonio Domenico Trapassi, better known by his pseudonym of Pietro Metastasio, was an Italian poet and librettist, considered the most important writer of opera seria libretti.
Metastasio, c. 1770 by Meytens or Batoni
Statue of Metastasio in Rome, in front of the Santa Maria in Vallicella
Opere drammatiche, oratorj sacri e poesie liriche (1737)