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. With six singers doubled by six dancers, Anne Teresa De Keersmaeker depicts the desire which unites and separates human beings, like the interactions between atoms that, once broken, make new bonds possible.