Guglielmo and Ferrando, confident of the faithfulness of their girlfriends Fiordiligi and Dorabella, are challenged by the cynical Don Alfonso to put the constancy of their betrothed to the test. When the young men disguise themselves as strangers and declare their love for the sisters they are shocked at the outcome. 202The ensuing confusion, deliberately aided by the maid Despina, results in one of Mozart’s most delightful and popular comic operas.