Paul thinks John would have loved the song

Paul is convinced John would have approved of the project, including the use of AI.

Speaking in the documentary film, he said: "We listened to the track. There’s John in his apartment in New York City, banging away at his piano, doing a little demo.

"Is it something we shouldn’t do? Every time I thought, like that, I thought ‘wait a minute.’

"Let’s say I had a chance to ask John. ‘Hey John, would you like us to finish this last song of yours?’ I’m telling you, I know the answer would have been ‘yeah.’ He would have loved that.”

And John's son Sean Lennon agreed, adding: "My Dad would've loved that because he was never shy to experiment with recording technology. It's really beautiful."