Two versions of David Tudor's electronic environment masterpiece, the first performed in 1968 by Tudor and Takehisa Kosugi for the Merce Cunningham Dance Company; the 2nd is an electro-acoustic environment from 1973. "'Rainforest' blends music and sculpture by placing music in space in extraordinary ways. The idea is to channel electronic output through an object rather than through the usual device, a loudspeaker. Dozens of unique and unlikely objects are suspended from the ceiling at about ear level. The space is filled with gentle sounds given off by the vibration of the hanging objects via a contact microphone, fed back into his controls for filtering and mixing, and then redistributed out again to some other object or a conventional loudspeaker. The recycling phenomenon that takes place makes the entire electro-acoustic apparatus of 'Rainforest' an 'ecologically balanced sound system.' The result is a timeless sonic environment full of rich textures offering the listener an infinite variety of aural densities and spatial effects."