John Lennon and Paul McCartney wrote the song in 1967 but I doubt even they couldn't have predicted that it would inspire a scientific idea to save the planet!
The conversation had begun again, lifting and dropping in its own rhythm, weaving in and out of the band music, now doing a swing version of Lennon and McCartney's " Ticket to Ride."
It’s a crackly recording of Paul McCartney singing " It's for you" , a song he wrote with John Lennon for another singer from their home city of Liverpool, Cilla Black.
" This is not out of some woolly desire to sit in a circle and sing Lennon's 'Imagine', this is to remind people that free societies are stronger societies."