Sir immersed himself in the experience as he was seen alongside festival-goers.
The Beatles legend, 81, was when they took to the stage for
Dave Grohl and co. with Sir Paul and his wifesinging and clapping along.
Sir Paul even got his phone out to capture the incredible scenes, being the ultimate supportive friend given how close he’s grown to the band’s founder over the years.
Crowd members later flocked to the top of the Glastonbury hill to take a snap of and one fan caught Sir Paul also taking in the beautiful scenery.
‘A surreal moment amongst an already mad weekend,’ they tweeted.
‘Walked to the top of the @glastonbury hill for a sunset photo, turns out Paul McCartney had the same idea!’
There have been plenty of rumours flying around as to why Sir Paul is in Somerset.
Many believe on Sunday night, given that he has already teased bringing out not one, not two, but
confirmed the joyous news on Thursday, days before the big moment.
He told Sky News’ Beth Rigby: ‘Four collaborators of his choosing.
‘People, he just thought, “I’d really like to do something with these artists at Glastonbury”. And that’s all I’m going to say.’
Asked who they might be, Furnish said: ‘Sorry. I am sworn to secrecy.’
Speculation is also rife that for a Hold Me Closer duet, with the song having marked her first release since the end of her 13-year conservatorship.
Brit hasn’t exactly done anything to put the rumours to bed either, having shared
All will be revealed tonight.