Sir Paul McCartney gets "very emotional" whenever he performs 'Now and Then'.
The 82-year-old music legend was part of the Beatles alongside John Lennon, George Harrison, and Ringo Starr - who is the only other surviving member of the group - and after he released the AI-assisted track as the band's "last" official release , he has included it on all of his tours but can become teary throughout because it was originally composed by his late bandmate.
He told The Daily Mirror: "It's really great. When you introduce a new song, even though it's an old song, like 'Now and Then', the first reaction is, people aren't quite sure what it is or what you're doing.
"But during the run of the concerts, they get the idea. The word gets out on the internet, you know. So now the reaction is really strong, and for us it's great to play because it's a nice song to play, and for me, it's particularly great because it's a John song.
"And so it's very emotional for me. I love it. I love doing it, and the audience seem to love it too."
The track - which has now been nominated for two Grammy Awards - is a demo recorded by Lennon - who was killed in December 1980 at the age of just 40 - in the wake of The Beatles break-up.
It features his voice and him playing the piano at his Dakota building apartment in New York.
The 'Maybe I'm Amazed' hitmaker is currently on tour across the UK but is looking forward to having a break over the Christmas period.
He said: "So that's going to be good to be there. And then London, we finish it up around Christmas time. So that's exciting. We're looking forward to London, and then that will finish this tour, and we'll all be very glad to have a nice Christmas holiday."
