The pop star will be the youngest solo headliner in the festival’s history.
‘The Man Who’ found Travis’ pastoral guitar-pop chiming perfectly with the times and taking the band into the mainstream.
The archival footage will be broadcast BBC platforms from June 25 to 27 as this year's festival was cancelled due to the pandemic.
The news comes after the band's new album, Dreamers Are Waiting, was released on June 4.
All performances will take place on the Pyramid Stage, while a maximum capacity of 49,999 people will be allowed.
The ambitious live-streamed event on May 22 will also feature Damon Albarn, IDLES, Jorja Smith and many more.
A cryptic video was shared on the festival’s social media accounts.
The coming summer will thus be the second in a row without a Glastonbury, after the 2020 event was called off in March last year.
The archive is currently in the early stages of development, but will prospectively launch in 2021.
Michael Stipe said of R.E.M.'s performance, "we pulled ourselves back to the front of the line and proved what we’re capable of. It was a great show for us!”
The best Glastonbury performances have not only defined careers, they’ve made musical history. These 30 festival highlights reveal why.
In the week that should have seen the festival gates open, the famous London museum will instead showcase a special page on their official website over the course of seven days.
Taking place over the weekend of June 18-20, the festival had already announced the likes of Tim Burgess, Arlo Parks, Georgia and Squid.
Though the legendary UK festival was cancelled this year amid COVID-19, it will be celebrated with special programming and a pop-up channel on the BBC iPlayer.
Paul McCartney, Kendrick Lamar and Taylor Swift were due to headline this year's star-studded event.