Bach_10K

transforms the huge disused gas storage tank in Augsburg, Germany, into an ever-changing soundscape. The hypnotic swing of the 70m-long Foucault pendulum sets the beat for a very slow rendition of Bach's prelude in C.
Chords build up note by note conducted by this gargantuan metronome. At a pace of one note every 17 seconds the piece runs about 10,000 seconds. That's how the project got it's name.
Starting and ending in pure C-major the progression through tensed or even dissonant chords can be felt bodily as organ pipes make the air inside the towering steel cylinder resonate.
As the planet revolves, seemingly making the pendulum change its orientation in space the harmonies follow their tracks hidden in time.