Sir Paul McCartney courted controversy on Saturday night as he used a clip of Johnny Depp from an old music video during his headline Glastonbury performance.The Beatles star, who turned 80 last week, took to the famous Pyramid stage this weekend to perform a selection of some of his most beloved tracks as he broke the record for being the oldest solo performer to ever grace the music festival’s stage. It was during a performance of his track My Valentine, that a video was played on the screen behind Sir Paul, featuring the Pirates of the Caribbean actor using sign language in accompaniment to the song.