Outer Zabriskie:
Tracks 1-15: recorded November & December 1969, Rome, Italy
Spontaneous Underground:
Track 1: recorded October 31, 1966 - Thompson Private Recording Studio, Hemel Hempstead, UK - front the soundtrack of the film "San Francisco"
Tracks 2-4: recorded October 25, 1969 - Actuel Music Festival, Amougies, Belgium (Mont de L'Enclus) - from the soundtrack of the film "Music Power"
Track 5: recorded February 11, 1970 - Birmingham, England
Track 6: recorded March 7, 1973 - International Amphitheater, Chicago, Illinois - songs composed for the film "La Vallee"
Track 7: recorded December. 1972, at the Palais De Sports, St. Ouen, France - from an FM broadcast on RTL Radio
Track 8: alternate studio version, recorded for BBC documentary on American NASA space program, Mixed 1974