Please take note:
this documentary is in english with french subtitles.
Variations VII, performed at 9 Evenings, was the next to last in John Cage's series of indeterminate works that he had begun in 1958, which made increasing use of electronic equipment and systems. This DVD documents the only complete performance of Variations VII and also presents a stereo audio recording of the full 85 minutes of the performance. This rare and historical film is the second in the 9 Evenings series from E.A.T. and ARTPIX and was produced by Billy Kluver and Julie Martin of E.A.T.
[Quelle:http://www.9evenings.org/variations_vii.php]
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Merce Cunningham, Billy Kluver, David Tudor, Bob Moog, Cecil Coker, Rudy Kompfner and Terry Riley