Coverage of this year's music and arts festival at Worthy Farm in Somerset kicks off tonight with the live headline set by U2 on the Pyramid Stage - the first Glastonbury performance of the band's career. It would've been their second had Bono not done his back in last year... Coverage courtesy of Jo Whiley, Mark Radcliffe, Lauren Laverne and Zane Lowe continues on BBC4 and indeed again on BBC2 from 11.05pm with sets from Morrissey, Biffy Clyro, BB King, hip-hop pioneers the Wu-Tang Clan, Cee Lo Green, drum 'n' bass duo Chase & Status, Jimmy Cliff, Primal Scream, Mumford & Sons and Fleet Foxes. The later BBC2 show also features acoustic sets from the backstage garden, as well as reports capturing some of the more obscure sights and sounds of the festival.