Everest SDBR 3230 (LP)

Variations IV: Volume II, John Cage Assisted by David Tudor

John Cage: Variations IV (1964) 30:00
excerpts from 6 hour performance:

Side 1:
  Introduction - Part I 15:30

Side 2:
  Part II 14:30

John Cage and David Tudor performing

From a live performance at the Feigen / Palmer Gallery in Los Angeles, August 1965
Liner notes by Joseph Byrd
This recording (together with Vol.I) was later re-released on CD: Legacy 439 and Essential Music Group ***.
LP released in 1968

Sources: New Albion Discography, University of California, Berkeley Music Library catalog2 and Paul van Emmerik: Diskographie in "John Cage - Musik-Konzepte Sonderband II" and Discogs website