The 72-year-old rocker returned to the stage on Saturday after cancelling part of his 'Out There' tour in May due to a viral infection but he was more than happy to share the spotlight with John Dann, who popped the question to his girlfriend at the gig in Albany, New York, reported E! online.
McCartney invited John onstage and allowed him to sing part of The Beatles' 1967 song 'When I'm Sixty-Four' in front of the 13,000-strong crowd. The fan then proposed to his girlfriend Claudia Rodgers, who happily accepted.