Caten, 2012 a levitating kinetic sound sculpture by David Letellier for Saint Sauveur chapel (video)
Caten is a levitating sculpture, determined by gravity and guiding the evolution of a sound composition. 300 fine wires suspended from two ropes, connected themselves at each end to a slowly rotating arm, form an evanescent surface which interacts with the architecture… The sound composition is inspired by the medieval solmisation prayers, especially the first verse of “Ut Queant Laxis”… At each turn, the engines emit one of the first 4 notes of the scale (Ut, Re, Mi, Fa), creating a sequence of intervals, constantly reconfigured. Low frequencies resonate in the space and emphazise the transcendental character of a place once dedicated to faith.
Text taken from http://www.davidletellier.net/works.html#caten