Cornelius Cardew (1936-1981) composed Treatise, between 1963 and 1967.  It consists of 193 visual scores that can be played by any combination of instruments and interpreted in any way the performers wish.

Just released on Bandcamp:
Vol. 6: pages 131 to 160
Vol. 5: pages 101 to 130

Taking it all the way back:
Vol. 4: pages 76-100
Vol. 3: pages 51-75
Vol. 2: pages 25-50
Vol. 1: pages 1-24

Get some electronic sounds in your playlist, 5 minutes at a time. Support my little podcast before I have to take ads for memory foam mattresses.

I got some new music up on Bandcamp, an album of icy mellowness called Winter Sketchbook.