John Lennon with his son Julian Lennon, wife Yoko Ono and Mick Jagger appear in
this video below.
It’s an outtake of them kidding backstage at the BBC studio where in Dec 1968
The Stones filmed their TV Special
The Rolling Stones' Rock’n’Roll Circus, with guests Marianne Faithfull,
first line-up of Jethro Tull (with Tony Iommi on guitar), The Who, Taj Mahal,
and John Lennon who performed Yer Blues with Eric Clapton, Keith Richards
(on bass) and Mitch Mitchell (drums, The Jimi Hendrix Experience's drummer).