The Fire hitmakers closed the iconic event in the south west of England, and they entertained revellers with tracks including Club Foot, Empire, Shoot the Runner, and a cover of Gnarls Barkley's Crazy.Towards the end of their show, the band told the crowd their roadie of ten years, identified only as Rick, was celebrating his birthday on Sunday and they invited him on to the stage before leading the audience in a chorus of Happy Birthday.Guitarist Serge Pizzorno said: "He's given his life to rock and roll so we owe him that."Frontman Tom Meighan also spoke movingly of how the band first played Glastonbury ten years ago in an early afternoon slot on a remote stage, and he thanked fans for helping them achieve headline status.Earlier on Sunday, country legend Dolly Parton proved to be the biggest draw of Glastonbury 2014 when she attracted a capacity crowd during her afternoon set, performing to larger numbers than Friday night headliners Arcade Fire and Saturday's bill-toppers Metallica.A 100,000-plus audience flocked to see Parton, as she sang hits including Jolene and Blue Smoke, while many paid homage by dressing up as the star.Parton told the adoring crowd it was "such an honour and such a thrill to be here at Glastonbury Festival".She added: "I've been waiting a lifetime for this and of course we want all of you to have the best time."Earlier, Parton told a press conference backstage that she had planned to play some of her more upbeat tracks from her extensive back catalogue."I can't do a bunch of sad songs because everyone is drunk and high," she said.Describing Glastonbury as the "biggest festival in the world", she added: "I thought I had to write a song about the Glastonbury mud, even though the sun's shining today."She said the conditions underfoot made her feel at home as she grew up in Tennessee on a farm."I'm just a country girl and now I feel like a rock star," she added.The singer was speaking as she was presented with an award backstage at the festival in recognition of her having sold 100 million records worldwide.