http://www.ubu.com/film/cage_four.html

John Cage: 4’33»
BBC 4, 2004 (9:22)
January 15, 2004
Format: MP4 [38.5mb]

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Radio 3 plays ‘silent symphony’
BBC Radio 3 has aired more than four minutes of complete silence… by design.
The BBC Symphony Orchestra gave a performance of composer John Cage’s seminal piece 4’33», which does not contain a single note.
Radio 3 broadcast the entire composition live, even having to switch off its emergency system that cuts in when there is apparent silence.
The performance took place on Friday night at London’s Barbican Centre.
It was part of a weekend of Cage’s work. The late avant-garde composer «wrote» the piece in 1952. […]