Photo: Cai Trefor
Emily Eavis has teased that there's a "really big" secret about this year's Glastonbury line-up, and says all will be revealed very soon.
At the end of March, the initial line-up poster for this year's event was unveiled - with the likes of The xx, Katy Perry, Phoenix, Lorde and Biffy Clyro joining previously announced headliners Radiohead, Foo Fighters and Ed Sheeran.
There's still loads more acts to be added though, and the rumour mill surrounding potential secret sets and surprises has been as rife as ever.
Now, speaking to BBC Newsbeat, the festival co-organiser Emily Eavis has claimed one booking in particular is rather exciting.
"We've managed to keep some big secrets recently and there's a couple this year that haven't gone out yet as well."
She continued: "There's a really big one. I haven't even hinted or told anyone it's coming and we've managed to keep it completely quiet for the first time ever.
"I'm just pleased we've managed to keep it secret for this long. We've had it for about six months."
In recent years Glastonbury has hosted secret performances from the likes of Pulp, Biffy Clyro and Radiohead - who took to the smaller Park Stage at Worthy Farm. This year, The Park area celebrates its tenth year at the festival, so it's likely some big names will show up to mark the occasion.
Who could it be? With only 40 days until gates open, there's not long to wait.
Meanwhile, each area of the festival have been announcing their line-ups separately. Yesterday, Billy Bragg's Leftfield tent unveiled their bill - which includes Declan McKenna, Nadine Shah and Alison Moyet. Previously, the Field Of Avalon stage offered up some surprising names - with the likes of pop rockers Busted, 24's Kiefer Sutherland and Sophie-Ellis Bextor being among the artists appearing.
Glastonbury Festival takes place 21 - 25 June.
