Folkways FT 3704 (2LP's) Indeterminacy

LPs 1 and 2:
Indeterminacy (1959), performed simultaneously with sections from piano parts for Concert for Piano and Orchestra (1957-58) and prerecorded tape from Fontana Mix (1958-59) 46:05 and 44:17

John Cage, reading. David Tudor, music

Recorded (mono) in 1959
LP released in 1959.

Source: New Albion Discography