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.
Gli equivoci
Following the success of his libretto for "The Marriage of Figaro", Da Ponte was asked by Storace to provide for him a libretto based on Shakespeare. Da Ponte compressed Shakespeare's plot into two acts, but retained nearly all the key elements. "Gli equivoci" was the second of Storace's operas to be performed at the Burgtheater.