Some time ago they had this recording featured in the (then new) modern wing of the Art Institute of Chicago. It might have been the 40+ minute version mention

Some time ago they had this recording featured in the (then new) modern wing of the Art Institute of Chicago. It might have been the 40+ minute version mentioned on Wikipedia (I certainly don’t remember) because I think I stood there for maybe 30 minutes listening. I caught it somewhere near the beginning and it was just so cool to listen to. It was also fun to see the people who came and went and those who stayed there for as along as I did - or longer. Edit: unrelated to this piece, but at or around the same time the same gallery also featured this “delightful” and disturbing piece: https://www.artic.edu/artworks/146989/clown-torture https://www.artic.edu/artworks/146989/clown-torture