This, plus "The Six Wives of Henry the Eighth" should be staples in anyone's catalog if they're fans of prog-rock/brain-rock (of which both Wakeman and the band in which he was a member, "Yes", were two of the biggest and best creators).
"Six Wives" and this album were both released in the early '70's, and along with "Close To The Edge"; "Argus" by Wishbone Ash, and several others formed the core of my early college listening.
Thanks for this clip, and the memory!