Muse will make their return to the Glastonbury Festival as music kicks off across Worthy Farm on Friday.
It is the band's third time headlining - meaning they will have scored a hat-trick, playing all three nights of the festival in Somerset.
Damon Albarn and the Orchestra Of Syrian Musicians will be the first act on the Pyramid Stage at 11am, ushering in three days of performances from hundreds of acts.
Other musicians scheduled to perform on Friday include indie act Foals, grime artists Skepta and Stormzy, rising star Jack Garratt and electronic music duo Disclosure.
The first day of music could also be marred by worsening mud and heavy showers, as the Met Office has forecast rain during the afternoon.
On Thursday, thousands of voices rang out across Glastonbury festival as campers joined in song to pay tribute to MP Jo Cox.
Singer Billy Bragg led attendees in a solemn version of We Shall Overcome as people spilled around the sides of the packed Park Stage to celebrate her life.
He was joined on stage by Emily Eavis, carrying her newborn baby, and more than a hundred women from the crowd who wore sashes in the purple, white and green of the Suffragettes.
A minute's silence was then held for the Labour MP, who was killed on June 16.
It had originally been scheduled for Wednesday, which would have been Jo Cox's 42nd birthday, but was pushed back after many were delayed arriving at the site due to heavy traffic.