Jon Anderson: Lead singer (1969-1979, 1982-2011) and lyricist of Yes.
Bill Bruford: Journeyman jazz drummer who started with Yes in 1969, got bored, moved to King Crimson, played live with Genesis after the Crims broke up, joined the supergroup UK in 1977, and joined the new iteration of the Crims in 1981.
Keith Emerson: Keyboard player/Moog synthesizer innovator who co-founded the Nice in 1967. He left that band in 1970 to form the progressive rock colossus Emerson Lake & Palmer, which broke up in 1978.
Robert Fripp: Founding guitarist and songwriter behind King Crimson, who assigned that band name to rotating teams of musicians. Collaborated with Brian Eno on ambient music, starting in 1973, and worked with Eno and David Bowie in the late 1970s.
Peter Hamill: Founder and lead singer/songwriter of Van der Graaf Generator, which has existed on and off since 1969.
Lee Jackson: Bass player and vocalist for the Nice until its 1970 break-up.
Davy O’List: Guitarist for the Nice from 1967 until 1968, when he was let go.
Ton Scherpenzeel: Keyboard player for the Dutch band Kayak.
Stuart Taylor: Manager of Emerson Lake & Palmer from 1971 through their breakup in 1978.
Nik Turner: Multi-instrumentalist member of Hawkwind at the height of their popularity, from 1969 through 1976, when the band sacked him.
Rick Wakeman: Session keyboard player turned flamboyant, hard-drinking linchpin of Yes from 1969 to 1974, and intermittently since then.
Alan White: Drummer for Yes.