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Chants of “oh Jeremy Corbyn” have been heard around Worthy Farm since the first revellers arrived on Wednesday.
The Labour leader is arguably the most talked-about act at Glastonbury this year and he doesn't (as far as we know) even sing.
On 24 June (today) he will appear at Left Field at 4.30pm and also take to the legendary Pyramid Stage to introduce Run The Jewels, who perform at 4.15.
How to watch
If you're not at Glastonbury you can still watch Corbyn's introduction on the BBC's Glastonbury website or on BBC iPlayer , where you have six stages to choose from.
Show all 48 Ed Sheeran woos the crowd during his Pyramid Stage performance on the final day of the festival, 25 June 2017
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PC Small wearing a fairy costume sits on top of her horse Sedgemoor who is wearing garlands as she and her colleague interact with the public at Glastonbury, 25 June 2017
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Barry Gibb performs on the Pyramid Stage at the Glastonbury Festival, 25 June 2017
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Festival-goers queue to charge their mobile phones at the Glastonbury Festival, 25 June 2017
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Rag'n'Bone Man performs on day 4 of the Glastonbury Festival, 25 June 2017
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Jamie Cullum performs on the Pyramid Stage during day 4 of the Glastonbury Festival, 25 June 2017
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Musician Jarvis Cocker plays a DJ set from a wooden tree structure in the Greenpeace are at Glastonbury Festival, 25 June 2017
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Dave Grohl of the Foo Fighters performs at the Glastonbury Festival, 24 June 2017
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One of the 'Lords of Lightning' harnesses high-voltage electricity in a performance during the Metamorphosis Show in the Arcadia area at the Glastonbury Festival, 24 June 2017
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Katy Perry performs on day 3 of the Glastonbury Festival, 24 June 2017
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Labour party leader Jeremy Corbyn addresses the crowd alongside Glastonbury organiser Michael Eavis on the Pyramid Stage as he makes a guest appearance at the Glastonbury Festival Site, 24 June 2017
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Labour Party leader Jeremy Corbyn meets festival goers as he visits the Green Fields at the Glastonbury Festival site at Worthy Farm in Pilton, 24 June 2017
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Craig David performs on the Pyramid Stage at the Glastonbury Festival, 24 June 2017
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Gabrielle Aplin performs on the Other Stage during day 3 of the Glastonbury Festival 2017 at Worthy Farm, Pilton, 24 June 2017
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Lights illuminate the Glastonbury Festival site at Worthy Farm at night in Pilton, 23 June 2017
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The Flaming Lips perform on The Park Stage at the Glastonbury Festival, 23 June 2017
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People gather to watch the Arcadia landing show at the Glastonbury Festival site at Worthy Farm in Pilton, 23 June 2017
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Lorde performs on day 2 of the Glastonbury Festival 2017 at Worthy Farm, 23 June 2017
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Thom Yorke of Radiohead performs on the Pyramid Stage at the Glastonbury Festival of Music and Performing Arts on Worthy Farm near the village of Pilton in Somerset, South West England, 23 June 2017
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Romy Madley Croft and Oliver Sim of the XX perform on day 2 of the Glastonbury Festival 2017 at Worthy Farm, Pilton on June 23
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Former Labour MP Ed Balls attends Glastonbury Festival on 23 June 2017
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Dua Lipa performs on the John Peel Stage on day 2 of the Glastonbury Festival 2017 at Worthy Farm, Pilton on June 23, 2017
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Revellers dance as they listen to Circa Waves perform on the Other Stage at Worthy Farm in Somerset during the Glastonbury Festival in Britain, June 23, 2017
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Festival goers at Glastonbury Festival Site on June 21, 2017 in Glastonbury, England
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Festivalgoers watching Blossoms on the Pyramid Stage at the Glastonbury Festival, at Worthy Farm in Somerset
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Actor Johnny Depp poses on a Cadillac before presenting his film ‘The Libertine’, at Cinemageddon at Worthy Farm in Somerset during the Glastonbury Festival
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Fans cheer as American actor Johnny Depp makes his entrance at Cinemageddon during the Glastonbury Festival at Worthy Farm, near Pilton, Somerset
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US actor Johnny Depp attends the Cinemageddon event as part of the Glastonbury Festival of Contemporary Performing Arts 2017 at Worthy Farm
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Cineramageddon ushers Daisy Peters (left), from Shepton Mallet, and Tamsin Walton, from Pilton, before an appearance by Johnny Depp for a screening of The Libertine, during the Glastonbury Festival
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Festival-goers pose at the Glastonbury Festival of Contemporary Performing Arts 2017 at Worthy Farm on 22 June
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Revellers sleep in front of a food stand at Worthy Farm in Somerset during the Glastonbury Festival on 22 June, 2017
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An aerial view of the Glastonbury Festival site at Worthy Farm in Pilton, Somerset on 22 June, 2017
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People gather to watch the sun set as temperatures reach record levels at the Glastonbury Festival at Worthy Farm in Pilton on 21 June, 2017
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Festival goers enjoy themselves as the gates open at the Glastonbury Festival amid heightened security at Worthy Farm in Pilton
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A festival goer arrives at Glastonbury Festival Site on 21 June in Glastonbury, England
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A festival goer at Glastonbury Festival Site on June 21, 2017 in Glastonbury, England
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Festival goers enjoy themselves as the gates open at the Glastonbury Festival amid heightened security at Worthy Farm in Pilton on June 21, 2017 near Glastonbury, England
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Festival goers at Glastonbury Festival Site on June 21, 2017 in Glastonbury, England
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Revellers sing and dance by the Stone Circle at Worthy Farm in Somerset
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Festival founder Michael Eavis arrives to attend a screening of film maker Julian Temple's Glastonbury documentary
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People attend a screening of film maker Julian Temple's Glastonbury documentary being shown at the new night time area Cinemaggedon on June 21, 2017
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People attend a screening of film maker Julian Temple's Glastonbury documentary being shown at the new night time area Cinemaggedon on June 21, 2017
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People gather to watch the sun set as temperatures reach record levels at the Glastonbury Festival at Worthy Farm in Pilton on June 21, 2017
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The sun sets at the Glastonbury Festival 2017 at Worthy Farm in Pilton on 21 June, 2017
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Fireworks illuminate the night sky at the end of the first day at the Glastonbury Festival on 21 June
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A reveller smokes by the Stone Circle at Worthy Farm in Somerset during the Glastonbury Festival on June 22, 2017
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Run The Jewels
Run The Jewels' show looks set to ahead despite the recent death of Killer Mike's mother.
Posting on Instagram he wrote: “My mother has transitioned to be with our ancestors. All those who believe as I do know energy cannot be destroyed only transformed.
"I pray she is with our elders in someway and that peace and harmony follow them wherever their souls may roam. I love u Denise with all my heart and soul I do! Your children are successful, your house is in order. Your legacy is intact.
"You are the reason I know with no doubt in my heart My God is A Black Woman. Goodbye Mom."
Addressing Corbyn's appearance, Glastonbury founder Michael Eavis explained : "We’re Corbyn fans, that’s the thing.
"He’s got something new and precious, and people are excited about it. He really is the hero of the hour."
Keep up with the latest Glastonbury coverage here
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