Sir Paul McCartney made a special guest appearance alongside Billy Joel in New York on Friday (July 18th).
McCartney joined Joel on a duet of The Beatles' 'I Saw Her Standing There' and 'Let It Be'.
The former Beatle was one of a number of guests who joined the singer during his second night at the Shea Stadium – home to the New York Mets.
Roger Daltrey appeared with Joel for a special rendition of The Who's 'My Generation', while Aerosmith's Steven Tyler performed 'Walk This Way'.
McCartney's guest appearance came hours before he played to 200,000 people in the city of Quebec.
You can read all about his concert, which was widely criticised by nationalists, HERE.