Rockers Muse and legend Stevie Wonder look set to join the bill at this year's Glastonbury Festival.
Organiser Michael Eavis revealed soul icon Wonder was the "probable" Sunday-night headliner on the Pyramid Stage, while reports claim Muse are set for the Saturday night top slot.
Veterans U2 have already been confirmed as the headliner for Friday night at the festival, which runs at Worthy Farm, Pilton, between June 25 and 27.
However, a Glastonbury spokesman said talks were still on going.
"We would love Stevie Wonder to play but nothing has been confirmed yet," he said.
"There has also been a lot of speculation about whether Muse will be headlining, but we can't confirm anything at the moment.
"We are still in talks."
Meanwhile, Hawaiian singer-songwriter Jack Johnson has been confirmed for a Sunday slot, alongside U2 and Emerging Talent Contest winners My Luminaries as the only acts officially confirmed so far.
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