Le nozze di Figaro, ossia la folle giornata (The Marriage of Figaro, or The Day of Madness), K. 492, is an opera buffa (comic opera) composed in 1786 in four acts by Wolfgang Amadeus Mozart, with Italian libretto by Lorenzo Da Ponte, based on a stage comedy by Pierre Beaumarchais, La folle journée, ou le Mariage de Figaro (1784).
Although the play by Beaumarchais was at first banned in Vienna because of its satire of the aristocracy, considered dangerous in the decade before the French Revolution, the opera became one of Mozart's most successful works. The overture is especially famous and is often played as a concert piece. The musical material of the overture is not used later in the work, aside from two brief phrases during the Count's part in the terzetto Cosa sento! in act 1.