1977
Max Neuhaus, (Untitled) Documenta VI, Kassel 1977

 Poster Max Neuhaus for Documenta VI,  Kassel, 1977

"The untitled contribution for the1977 Documenta 6 in Kassel was situated in a clearing, where stood a tree. Hidden in the tree were eight highly directional speakers emitting clicking sounds that seemed to spring from the grass by way of sound reflection. The clicks were reminiscent of “the sounds of stepping on a twig, or a drop of water falling from a leaf.” 

Max Neuhaus

 https://www.max-neuhaus.estate/en/bibliography/press/new-music-by-joan-la-barbara-1977