Mozart's genius in setting to music da Ponte's comic play of love, infidelity and forgiveness marks COSI FAN TUTTE as one of the great works of art from the Age of Enlightenment. Nicholas Hytner's beautiful new production, with its sure touch and theatrical know-how, lives up to its promise to be "shockingly traditional" as Iván Fischer teases artful performances from an outstanding international cast of convincing young lovers.