Muse will be joined by a surprise guest during their headline slot at Glastonbury this weekend.

The band are due to perform on the Pyramid Stage on Saturday (June 26).

Drummer Dominic Howard said the guest collaboration would be “very, very special”, but refused to be drawn any further on the subject.

"If it comes off, it'll be a huge moment for Glastonbury,” he told The Sun. "It will take it to a whole new level for us."

The festival, which runs from June 25-27, will also feature headline performances from Gorillaz and Stevie Wonder.

For all the latest Glastonbury news and photos, check back to www.gigwise.com all this week and through the weekend, or follow us on Twitter and Facebook.

For more information about Glastonbury and all this summer's festivals, check out the Gigwise Festival Guide.

Glastonbury 2010: 20 Must-See Acts On Saturday