The Marriage of Figaro (play)
The play formed the basis for an opera with a libretto by Lorenzo Da Ponte and music by Mozart, also called "The Marriage of Figaro" (1786). In 1799, another opera based on the same play, "La pazza giornata, ovvero Il matrimonio di Figaro", was produced in Venice with libretto by Gaetano Rossi and music by Marcos Portugal.
La fille du tambour-major
La fille du tambour-major ("The Drum-Major's Daughter") is an opéra comique, or operetta, in three acts by Jacques Offenbach. The French libretto was written by Alfred Duru and Henri Charles Chivot (who often wrote libretti for Charles Lecocq).