Paul McCartney is due to appear on The Rolling Stones' upcoming album, bringing together two of the biggest acts in music history.
The former Beatle, 80, has provided a bass part to one of the tracks that is expected to feature on the Stones' upcoming studio album, which remains untitled.
A spokesman for the Stones said reports Ringo Starr also featured were untrue and that McCartney had found himself in a nearby recording studio while Mick Jagger and Keith Richards were mixing the record.
The album, due to be released later this year, will feature the late Rolling Stones drummer Charlie Watts on around half its songs, with current drummer Steve Jordan on the others, the PA news agency understands.
Jordan has toured as a regular member of the band since the death of the iconic Watts in August 2021.
US publication Variety previously reported McCartney had recorded for a forthcoming Stones project "helmed by 2021 Grammy producer of the year Andrew Watt" during sessions in Los Angeles.
Although the Beatles and Stones were portrayed as rivals during the 60s and 70s, members have collaborated over the years.
During the Stones' Rock and Roll Circus show in 1968, John Lennon made an appearance as part of a supergroup dubbed The Dirty Mac, and the late Brian Jones played on the Beatles track You Know My Name (Look up the Number).
The Stones also scored an early hit with I Wanna Be Your Man - a song written by Lennon and McCartney, and later also recorded by The Beatles.
This past summer, the Stones - Jagger and guitarists Richards and Ronnie Wood - travelled through Europe for their 60th-anniversary tour.
Source: Press Association