Metallica have been announced as the first headliners at next year's Reading and Leeds festival - 18 years after first headlining the event.
The US rockers, who have sold more than 110 million records around the world, will perform on both stages over the August bank holiday weekend.
It comes after the Californian four-piece heavy metal act headlined Glastonbury this year despite fears that their hard rock sound clashed with the event's hippy ethos.
It is their fourth time at Reading and Leeds, which featured performances by Queens of the Stone Age and Arctic Monkeys this year.
Festival boss Melvin Benn said: "I'm thrilled to be able to announce Metallica as the first headliner for Reading and Leeds 2015.
"Their amazing live show promises to be a favourite with rock, metal and genuine music fans at the UK's most important music festival, perfectly topping a bill of brilliant acts from across the genres.
"I'm looking forward to revealing the rest of the festival line-up, which will feature the absolute best of rock, indie, dance and hip hop and will only add to the amazing atmosphere that makes Reading and Leeds so special."
Also announced are American rockers Pierce The Veil, who will make their debut at the festival next year.
Frontman Vic Fuentes said: "We've been dying to do these festivals ever since we started touring in the UK. It's such an honour to be a part of something that people wait all year round to see."