U2 undecided over Glastonbury setlist, says Larry Mullen

U2 are undecided over the order of their setlist for their headline performance at this weekend's Glastonbury festival.

The Irish rockers will close the opening night of the festival on Friday, with a 1-hour, 45-minute set on the Pyramid Stage.

However, the band's drummer Larry Mullen told Zane Lowe on Radio 1 that the group have yet to decide a running order for the collection of hits they are planning to perform.

"It's taken a lot of time and energy to figure out what the setlist is going to be. There's a 'Where The Streets Have No Name' camp or there is the more subtle approach where we could build slowly," Mullen explained.

"We've gone through a number of combinations and everyone seems to have a different opinion... We all know who gets his way in the end!"

U2 will reportedly face a number of protestors when they headline the festival this weekend, after tax protest group Art Uncut made plans to campaign against the band's "convoluted" tax affairs.

Digital Spy will be bringing you the latest coverage from Glastonbury festival all weekend.

> In Full: Glastonbury lineup unveiled

Watch the music video for U2's 'Where The Streets Have No Name' below: