COSI FAN TUTTE, ossia La scuola degli amanti. An opera buffa in two acts, commanded by the Emperor, libretto by Da Ponte, music by Mozart; produced at Vienna Jan. 26, 1790; London, King's Theatre, May 9, 1811. The libretto is so bad and the music so good that various attempts have been made to fit the opera with new words, as ‘Le Laboureur Chinois
’ (1807), ‘Peines d'amour perdues
’ (Barbier & Carré, 1863). Otto Jahn possessed a MS...