Watch: Paul McCartney performs 'My Valentine' in Seattle in front of video of Johnny Depp
A video shared on Instagram showed that when Sir Paul was on stage in the US this week, a video screen displaying Depp was the backdrop.
The Donnie Brasco star was seen strumming a guitar in the clip, which was shared by model Jill Vedder, who is married to Pearl Jam's Eddie Vedder.
As Depp played in the background, Sir Paul was sat at the piano performing 'My Valentine'.
Macca had a cameo role in 2017's Pirates of the Caribbean: Salazar's Revenge playing Jack Sparrow's uncle Jack opposite Depp, after Keith Richards was unable to reprise his role as Sparrow's father.
It comes as Depp and Heard's case rumbles on.
However, according to reports, Sir Paul has been using the footage of the actor at his shows for many years.
Depp, 58, is suing his former wife over a 2018 piece she wrote in The Washington Post in which she said she was a "public figure representing domestic abuse”.
Heard – who did not mention her ex or anyone else by name — is counter-suing.
The former couple met in 2009 on the set of Hunter S Thompson adaptation The Rum Diary and they went on to tie the knot in 2015.
However, Heard filed for divorce around a year after they exchanged vows and their divorce was finalised in 2017.
In 2020, Pirates Of The Caribbean star Depp lost a libel case against The Sun over an article that called him a "wife beater".