For 10 points, name this opera by Wolfgang Amadeus Mozart.
One character in this opera sings about his many loves in the aria "Non so più cosa son, cosa faccio" and jumps out of a window after hiding in a closet. That character also sings the aria "Voi che sapete." A pin conveying a secret meeting is lost by Barbarina at the beginning of Act Four. In Act Three, a contract is nullified after it is revealed the title character is the son of Marcellina and Bartolo. In this opera, both the page Cherubino and the Countess Rosina dress up as Susanna, whom Count Almaviva attempts to woo. Susanna is the bride of the title character who, in another work, serves as the Barber of Seville. For 10 points, name this opera by Wolfgang Amadeus Mozart.
One character in this opera sings about his many loves in the aria "Non so più cosa son, cosa faccio" and jumps out of a window after hiding in a closet.
The Marriage of Figaro [or Le nozze di Figaro]