Side 1: Edgard Varèse: Ionisation 5:46 John Cage: First Construction (in Metal) (1939) 9:45
Side 2: Harold Farberman: Evolution 16:49
London Percussion Ensemble. Alan Civil, French Horn (in Evolution). Meryl Drower, soprano (in Evolution). Harold
Farberman, conductor. David Johnson, director.
Digital recording: July 31, 1980 in Watford Town Hall, Watford, England
LP released in 1981
