In the mournful mid-section, keyboardistRick Wakemanchannels Bach on the pipe organ, recorded at a London church.

The instrumental mixes are revelatory, especially on And You And I.

Stripped of the layered harmonies, Squires acrobatic bass lines steal the spotlight, as they should.

Yes 1972 at the Hyatt House in Hollywood from left to right: RickWakeman, Bill Bruford, Chris Squire, Jon Anderson (front), Steve Howe

Yes 1972 at the Hyatt House in Hollywood from left to right: Rick Wakeman, Bill Bruford, Chris Squire, Jon Anderson (front), Steve Howe© Neal Preston*

The radio edits, single versions and Steven Wilson edits are inconsequential.

The Rainbow tracks feature drummer Alan White, who handles hours of intricate time signatures with aplomb.

He would remain with the band until his death in 2022.