Glastonbury 2013

Even if you didn't like the Rolling Stones, there seemed to be some kind of strange obligation to go to see them.

Glasto trivia fact number 532: before Saturday night's Stones show which saw the audience packed right back to the perimeter fence, the largest crowd ever assembled at the Pyramid stage was to watch The Levellers in 1994.

Two titans of rock music met at last on Saturday night when the Rolling Stones made their riotous Glastonbury festival debut 51 years after they formed.

Glastonbury festivalgoers always seem pretty bloody pleased with themselves so who better then to pour a bracing bucket of water over everything than Portishead, a band whose musical output has slowly – three albums in 19 years, the last half a decade ago – grown increasingly icy, never mind the grumpy old man persona that Geoff Barrow has cultivated on Twitter?

"Let me ask you one question," says Bobby Womack, the instant he speaks to me from Los Angeles.

Just weeks after their bassist underwent surgery for a blood clot on his brain, Mumford & Sons are set to go ahead with their performance at Glastonbury 2013.

Michael Eavis has just been for an early-morning swim, and is explaining the relationship between work, pleasure and the tax man.