Mumford and Sons have revealed that they are feeling the fear ahead of their headlining slot at Glastonbury Festival tonight.

The band are worried about taking risks in the setlist as they close the monster festival, which has already seen headlining performances from Arctic Monkeys and The Rolling Stones.

Mumfords banjo player Winston Marshall was asked by NME about the group’s mindset ahead of the slot, his reply: “pretty fucking nervous”.

“Fear. There’s a lot of fear involved,” he said. “There’s never been any higher expectation for any show. We’re excited and terrified.”

“We had a rehearsal this week and we’ve got a temporary setlist that we’ll probably do,” Marshall added. “We’re like, ‘We should do this! We should do this!!’ but if we fuck with it too much and take too many risks, it could backfire.

“And I heard that the Arctic Monkeys’ set was a hit-fest - it was amazing. We’ve only got two records’ worth though, so taking risks is dangerous.”

The band do have one trick up their sleeve however. Marshall revealed that the band will be welcoming a special guest on stage with them this evening, but would not name names.

Watch the Mumfords performance of ‘Little Lion Man’ at Glastonbury 2011 here: