"Cotton Fields" from Happening '69 is played live and based on the 20/20 version. The performances of "Break Away" and Johnny B Goode" are also live.
Wow, that must be only the second time an act played live on the show. Wilson Pickett was on the show the year before, and did 3 or 4 songs live. IIRC, Pickett insisted that he and his band play live, so Lindsay and Revere went to the producers and insisted that he be allowed to do so.
The timeline for the show posted above is slightly off - the show began as Happening '68 early that year, hosted by Lindsay and Revere, as a once a week show. In the summer, Revere, Lindsay, and soon-to-be-Raider Keith Allison hosted a Monday thru Friday spinoff called It's Happening. That ended when the kids went back to school in the fall. In '69, Happening '68 became simply Happening, and ran through September of that year.
I'm a Paul Revere/Raiders fan, so I know all this stuff.
I think there was also an episode where the Beach Boys promo film for I Can Hear Music was shown. The group themselves was not on the show that ep.
Is that where that "Just Like Me" clip comes from that used to get played on VH1 from time to time? Keith Allison is miming with the band and Smitty is punching a puppet.