Parnasso in festa, per li sponsali di Teti e Peleo ("Parnassos in celebration for the nuptials of Thetis and Peleus", HWV 73), by George Frideric Handel, is a festa teatrale, a form also called a "serenata", a type of Italian opera intended as entertainment to celebrate a festive royal or state occasion. The work was written to celebrate the marriage of Anne, Princess Royal and Prince William of Orange. Parnasso in festa had its first performance in London at the King's Theatre on 13 March 1734 and was repeated five times. The operatic entertainment, to an anonymous libretto, was such a success at its London premiere that although it was intended as a one-off production for a royal wedding, Parnasso in festa was revived by Handel in several subsequent seasons.[1][2]