Feedback soundinstallation by Petra Dubach and Mario van Horrik, presented 2001 in the abandonned Minebuilding in Waterschei, Belgium. Presented in the IM festival.
The copper plates hang from the ceiling on amplified strings. The speakers are placed against the plates, so they produce a low sonorous sound, that make the plates vibrate, and hitting the speakers, producing the higher sounds. Draught and people passing by influence the soundstructures. The immense building had a cellar and two floors, each measuring 100x75 meters. The sounds filled the whole building without being disturbing or overloud.