The legendary musician is believed to be voicing a role in the film based on his book with Lady Gaga writing new songs. Croker previously wrote an early version of Paddington, which helped get that hit movie off the ground.
Paul McCartney is set to appear in next year’s Pirates Of The Caribbean: Dead Men Tell No Tales. Production has wrapped, but directors Joachim Ronning and Espen Sanderberg went back and filmed an additional set-piece revolving around McCartney.