water jets falling off a canopy , transport not visible and not
audible sounds. Only if interrupted with an umbrella, quasi functioning
as loudspeaker, they become perceivable. So several persons together
can contribute playfully with their umbrellas to a sound composition.
Ars Electronica 2001, Linz / Austria
Outdoors under a canopy at the 'Hauptplatz' and the 'OK Centrum'
in Linz / Austria