Track 1 recorded at Advision & Trident Studios, London, Spring 1969. Originally released on Yes on July 25, 1969 (UK) and October 15, 1969 (US). Track 2 recorded at Advision & Trident Studios, London, late 1969/early 1970. Originally released on Time And A Word in July 1970 (UK) and on November 2, 1970 (US). Tracks 3, 4 recorded at Advision Studios, London, October/November 1970. Originally released on The Yes Album on March 19, 1971. Track 5 recorded at Advision Studios, London, September, 1971. Originally released on Fragile on November 1, 1971 (UK) and on January 4, 1972 (US). Also released as a single (Atlantic 45-2854) on January 4, 1972. Track 6 recorded at Advision Studios, London, August/September 1971. Originally released on Fragile on November 1, 1971 (UK) and on January 4, 1972 (US). Also released on the flipside on the Roundabout single on January 4, 1972. Track 7 recorded on mobile equipment, 1974. Originally released as a single (Atlantic 45-3242) on January 8, 1975. Also included in The Gates Of Delerium from the Relayer album. Tracks 8, 9 recorded at Mountain Studios, Montreux, Switzerland, late 1976/early 1977. Originally released on Going For The One on July 7, 1977. Also released as a single (Atlantic 3416) on September 7, 1977. Track 10 recorded at Sarm Studios, London, Spring and Summer, 1983. Originally released on 90125 on November 7, 1983. Also released as a single (Atco 99817) on October 24, 1983. Track 11 recorded at Sarm Studios, London, Spring and Summer 1983. Originally released on 90125 on November 7, 1983. Also released as a single (Atco 96976) on March 14, 1984. Track 12 recorded at Lake Recording Studios, Caramati, Italy; Sarm East and West Recording Studios, London; Air Studios, London; Southcombe Recording Studios, Los Angeles; and Sunset Sound, Los Angeles. Originally released on Big Generator on September 17, 1987. Also released as a single (Atco 99419) on December 7, 1987.