The central work of Hans van Koolwijk, the Bambuso Sonoro, originates from the idea of a single performer operating a number of flutes simultaneously. The Bambuso is an unpolished sound sculpture that is used as a musical instrument, whereby the visual is closely related to the aural. Sounds can be seen, as it were. One wants to be physically present, preferably between the flutes, to see the performer sweat, to experience the effort needed to produce the sounds.

-- FROM THE ARTIST'S WEBSITE

http://rhizome.org/editorial/2377