Herbert Brün - Über Musik und zum Computer 10'' (1971)
contempory experimental electronic/tape music
digitized @ 320 kbps
I found this book at a local library. It was in German, so I didn't really understand it, but was filled with large pages of triangles and warped squares, all overlayed. Hurray for avant-garde geometric scores!
The 10" was insert in the back sleeve of the book and features some wild music. And believe me, I own many many records of 60s/early-70s synth music, and the compositions here are in legion with the wildest. One of the most satisfying releases of all my 60s/70s contemporary electronics.
wikipedia entry on Herbert Brün