Pandit Pran Nath + La Monte Young, Marian Zazeela and Terry Riley in the 70s

Some very rare footage filmed during a live performance in Rome in 1977

La Monte Young - B flat Dorian Blues (5th day of hammer)

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Performed by The Theatre of Eternal Music in 1962:
La Monte Young : Sopranino Saxophone,
John Cale : Viola,
Marian Zazeela : Voice Drone,
Angus MacLise : Hand Percussion,
Tony Conrad : Bowed Guitar