The Beatles just dropped "Now And Then," a song released with the help of Artificial Intelligence (AI) to include the vocals of the late John Lennon.

"When we were in the studio we had John's voice in our ears so you could imagine he was just in the next room in a vocal booth or something and we were just working with him again so it was joyful," said Paul McCartney about the experience of recording the song.

"It was really lovely you know, because we hadn't experienced that for a long time obviously, and then suddenly here we were working with ol' Johnny."

"Now And Then" was originally recorded by Lennon over 40 years ago; it was written by Lennon in 1978 and it was dug up from the archives by McCartney and Ringo Starr, reports say.

The Beatles Returns With John Lennon

Wth the help of AI, McCartney and Starr managed to put together the audio, which was described as "beyond help" due to all those years being kept in the archives and the quality of the recording devices back in the day.

"It was kind of magical doing it," the singer-songwriter said.

"The first time we heard a tape go backwards by mistake we went 'Oh what's that?' and we wanted to put that on our record, whereas other people would just go 'Oh come on get the tape on the right way and let's get on with it'.

"But we always grabbed little things like that so Peter Jackson, he's organized it so it's magic. It's very special for me to be singing with John again."

According to reports, everything in regard to the newly released song was made last year.

READ MORE: Queen's Brian May Disapproves of Using Artificial Intelligence in Music? 'I'm Preparing to Feel Sad About This'

The Beatles Release One Last Song

Aside from releasing the song, McCartney and Starr included a music video on Nov. 2.

"Hello, I'd like to introduce you to a short film which tells the story of how me, John, George and Ringo came together to record our last song. It's a single called 'Now And Then'. We hope you enjoy it," McCartney introduced the music video.

"It took almost a quarter of a century for us to wait until the right moment to tackle 'Now And Then' again."

READ ALSO: Ringo Starr Confirms AI-Assisted The Beatles Song With John Lennon is The LAST [DETAILS]

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