To commemorate the event, Sir Paul broke out The Beatles' classic tune "Another Girl," from the Help! album, in what is believed to be the first time the song has ever been played live by any member of the Fab Four.

Indeed, The Beatles themselves never performed the song on-stage. McCartney appeared to be genuinely moved by the significance of the occasion. "It was sensational and quite emotional remembering the first time and then experiencing this fantastic audience tonight," McCartney said, as reported by NME.com.