Ono denied she "put John on H", however
The collaborative record will be released the benefit the Teenage Cancer Trust
The anecdote comes from the upcoming oral history of The Beatles called 'All You Need Is Love'
"I think she does a magnificent version of it and it reinforces the civil rights message that inspired me to write the song in the first place”
McCartney’s acoustic guitar and foot tapping from the Beatles‘ original 1968 master recording are featured
He also spoke about the origins of the iconic cover
The cover is the second track on 'Cowboy Carter', out today (March 29)
All the profits made from the sleeve will be donated to War Child
The collection included “love triangle” letters from former husbands George Harrison and Eric Clapton
He used a line from 'Back In The U.S.S.R.' to try to convince the Russian president to let the campaigners go