The pair performed on the festival’s Park Stage after being introduced by Michael Eavis.
“Welcome to the biggest surprise of the weekend,” the festival organiser told the crowd. “There’s two superstars… I’ll not name them but they’re right here.”
Siezing the moment, Yorke told the swelling crowd “Hi, my name is Thomas Yorke,” as he kicked things off, playing ‘The Eraser’ solo on the piano.
“Been in the studio all week with my first band,” he then told the crowd before building a loop around a funky bass riff for ‘Harrowdown Hill’.
He followed that with ‘Black Swan’, although he had to restart the song once, jokingly cursing “fucking amateurs!” at his slip.
Greenwood then joined his bandmate onstage, playing keys on ‘Cymbal Rush’.
The pair then both played guitars on ‘In Rainbows’ track ‘Weird Fishes/Arpeggi’.
‘Pyramid Song’ followed, with Greenwood taking a violin bow to his guitar while Yorke returned to the piano.
‘Idioteque’ saw the duo drop beats – mixed with a sample of an HGV’s reversing alarm – which got the now giant crowd dancing, before they played an acoustic version of ‘Karma Police’ triggering a mass singalong.
With the crowd singing the song’s “I lost myself” lyrics after the track had finished, Yorke then picked up his guitar and joined in with his audience.
He then launched into the band’s ‘Street Spirit (Fade Out)’. “Have a brilliant festival everyone,” Yorke told the crowd as he left the stage, “see you guys later.”
Thom Yorke and Jonny Greenwood played:
‘Street Spirit (Fade Out)’