Droit du seigneur
In Mozart's "The Marriage of Figaro", which premiered in 1786 with a libretto by Lorenzo Da Ponte, the comic plot revolves around the successful efforts of the young bride and groom, Figaro and Susanna, to block the efforts of the unfaithful Count Almaviva to seduce Susanna. To achieve his aim, the frustrated Count threatens to reinstitute "droit du seigneur". It was based on a play by Pierre Beaumarchais.
Piano Concerto No. 23 (Mozart)
The Piano Concerto No. 23 in A major (K. 488) is a composition for piano and orchestra written by Wolfgang Amadeus Mozart. It was finished, according to Mozart's own catalogue, on March 2, 1786, two months prior to the premiere of his opera, "Le nozze di Figaro", and some three weeks prior to the completion of his next piano concerto. It was one of three subscription concerts given that spring and was probably played by Mozart himself at one of these.