How often do you get the rhythm sections of the Foo Fighters, the Chili Peppers and Queen smashing it out together on the same stage? Pretty much never - or, well, today, is an exception.

Calling themselves the S.O.S. All Stars, Roger Taylor, Chad Smith and Taylor Hawkins took to the stage to lead a drum collective that launched Wembley's leg of the Live Earth event.

'Family favourites,' to use the words of Jimmy Carr, Genesis, are currently being introduced by Chris Moyles

We'll be keeping you up to date with everything that happens as one of the great days in Rock History unfolds