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.
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.