BBC News is reporting that Sir Paul McCartney says he has employed artificial intelligence to help create what he calls "the final Beatles record".

He told BBC Radio 4's Today programme the technology had been used to "extricate" John Lennon's voice from an old demo so he could complete the song.

"We just finished it up and it'll be released this year," he explained.

Sir Paul did not name the song, but it is likely to be a 1978 Lennon composition called "Now And Then". It had already been considered as a possible "reunion song" for the Beatles in 1995, as they were compiling their career-spanning Anthology series.

Sir Paul had received the demo a year earlier from Lennon's widow, Yoko Ono. It was one of several songs on a cassette labelled "For Paul" that Lennon had made shortly before his death in 1980.

Lo-fi and embryonic, the tracks were largely recorded onto a boombox as the musician sat at a piano in his New York apartment.

Cleaned up by producer Jeff Lynne, two of those songs - "Free As A Bird" and "Real Love" - were completed and released in 1995 and 96, marking the Beatles' first "new" material in 25 years. The band also attempted to record "Now And Then", an apologetic love song that was fairly typical of Lennon's later career, but the session was quickly abandoned.

"It was one day - one afternoon, really - messing with it," Lynne recalled. "The song had a chorus but is almost totally lacking in verses. We did the backing track, a rough go that we really didn't finish."

Sir Paul later claimed George Harrison refused to work on the song, saying the sound quality of Lennon's vocal was "rubbish".

"It didn't have a very good title, it needed a bit of reworking, but it had a beautiful verse and it had John singing it," he told Q Magazine.

"[But] George didn't like it. The Beatles being a democracy, we didn't do it."

Read the full story at BBC News.