The Marriage of Figaro - Act IV: "Perfida, e in quella forma meco mentia?" (Figaro, Countess, Cherubino, Count, Susanna) (费加罗的婚礼：第四幕，“妖兽，并在形式与痴呆症吗？”（费加罗，伯爵夫人，凯鲁比诺，计数，苏珊娜）)