Muse have announced they will be collaborating with a very special guest -- possibly an orchestra? -- when they headline Glastonbury festival later this week.
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."