text: At one point in this opera, the music shifts from major to minor key after the title character is slapped by his wife.
full_question: At one point in this opera, the music shifts from major to minor key after the title character is slapped by his wife. Its soprano starts doubling the wages of her new husband's household servants shortly after signing a marital agreement brought by the notary Carlino, causing her husband to angrily sing the aria "Son tradito." The overture to this opera, which begins with a melody played by a solo cello that is later picked up by the winds, samples the themes from two later arias entitled "So anch'io la virtu magica" and "Com'e gentil." In "Bella siccome un angelo" a character invents an imaginary sister who has recently finished at a convent school, named Sofronia. The title character, who disapproves of his nephew Ernesto's love for Norina, sings the duet "Cheti, cheti, immantinente" with his friend Dr. Malatesta. For 10 points, name this opera buffa by Gaetano Donizetti about an old Italian bachelor who seeks a young wife.
first_sentence: At one point in this opera, the music shifts from major to minor key after the title character is slapped by his wife.
raw_answer: Don Pasquale