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.
Gustav Mahler
Early in 1902 Mahler met Alfred Roller, an artist and designer associated with the Vienna Secession movement. A year later, Mahler appointed him chief stage designer to the Hofoper, where Roller's debut was a new production of "Tristan und Isolde". The collaboration between Mahler and Roller created more than 20 celebrated productions of, among other operas, Beethoven's "Fidelio", Gluck's "Iphigénie en Aulide" and Mozart's "Le nozze di Figaro". In the "Figaro" production, Mahler offended some purists by adding and composing a short recitative scene to Act III.