Prompted by Don Alfonso, a cynical old philosopher, two young idealists decide to put their lovers' fidelity to the test. But love will teach them a bitter lesson: those who believe themselves phoenixes and goddesses will discover the desires of the flesh... In 1790, one year after the French Revolution, in what would be their final collaboration, Mozart and Da Ponte conduct a scientific investigation of love. The music of Cos fan tutte is truly extraordinary - complex in its symmetry, jovial and yet infused with an almost sacred melancholia. An extraordinary score where each note seems intended to make us accept a loss - lost paradise, lost youth, or a lost loved-one - and portray a world where all is in a constant state of flux.