Così Fan Tutte: Italian-language opera buffa by W. A. Mozart

Così was first performed at the Burgtheater in Vienna on 26 January 1790.

Così fan tutte
by Wolfgang Amadeus Mozart
Portrait by Doris Stock, 1789
Genre	Opera buffa in 2 acts
Translation	Women are like that
Librettist	Lorenzo Da Ponte
Language	Italian
Premiere	Burgtheater Vienna 26 January 1790

Legend says the opera was based on a real-life incident that occurred in Vienna. In the 19th century, the opera was considered somewhat naughty, and was rarely performed. Modern critics however believe that the music is some of Mozart's finest, and the opera is now frequently performed around the world.

• Fiordiligi (soprano), Dorabella's sister and Guglielmo's lover
• Dorabella (soprano), Fiordiligi's sister and Ferrando's lover
• Ferrando (tenor), a soldier and Dorabella's lover
• Guglielmo (bass), a soldier and Fiordiligi's lover
• Despina (soprano), maid to Fiordiligi and Dorabella
• Don Alfonso (bass), a cynical bachelor

The opera is set in Naples in the 18th century. Don Alfonso wagers two young soldiers that their sweethearts will prove unfaithful if given the chance. The men accept the bet. They tell their sweethearts that they have been called to the front and leave Naples.

They return however as turban-clad, moustache-wearing "Albanians" to woo each other's sweetheart. With the conniving of Despina, the two sisters consent to marry the foreigners. At the last moment, the men remove their disguises, and rebuke their faithless sweethearts.

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