As with the upper section of Duchamp's Great Glass, this is the female part of the work, below which are three voyeurs, who make up the male part. The dancer consists of two open segments of a folding decimetre joined by a metal bar in order to form an isosceles triangle. On the bar hangs the inner membrane of a mouth harmonica, also metallic. To this, seven metal wires are joined, each ending with a splinter of mirrored Plexiglas. The object is hangingfrom the ceiling, free to whirlat every draught. The dancer can thus dance her aerial evolutions - measuring the three-dimensional space of the room where she is hanging through the two two-dimensional metre segments - to the sound of the melody created virtually by the air passing through the membranes of the harmonica. In her dance,she also spreads light reflections on the walls through her mirrored splinters. The assembly of the dancer emancipated the decimal unit of measure taking it to a three-dimensional level. It also emancipated the inner part of the musical instrument, which now plays virtually by itself and the mirror splinters, which sway and rotate, illuminating the walls with random reflections. On this occasion, once more, I did not want to add any colour to the native colours of the objects, letting their unique individual life take shape in the world.