The former Beatle's unfortunate tumble was caught on camera
"I'm thankful for the song without question"
The documentary arrives in UK cinemas later this month
Members of Toto, Eagles and The Heartbreakers also feature on ‘Rewind Forward’
Mick Fleetwood and Peter Frampton also appear on the star-studded cover
The comment appears in a letter that is being sold in a Beatles memorabilia auction this month
It features on her forthcoming 49th solo studio album 'Rockstar'
"I’d fucking pay to be in it"
The track is made by Paul McCartney and features vocals by John Lennon
“It's kind of scary but exciting, because it's the future”