This project twists the traditional architectural codes for theatres and opera houses, by reversing the upward movement usually imposed by a large ceremonial staircase. Here, the spectators use descending steps that allow them to gain depth and verticality, in a double movement of dilation of space and time. In successive stages, the central steps act as a decompression chamber, a moment of mental conditioning for the audience, who gradually leave the effervescence of the common foyer to join the quiet and hushed atmosphere of the main hall.