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.
Ernst Lert
As a music scholar, Lert published several biographies on notable musical figures and wrote the book "Mozart auf dem Theater" ("Mozart and the Theatre", published 1918). He also contributed articles to numerous magazines, music journals, and newspapers. He wrote the libretto for Hugo Weisgall's "The Tenor" (1952) and wrote the German libretto for Riccardo Zandonai's "Die Kavaliere von Ekeby" ("I cavalieri di Ekebù").