ITUNES FESTIVAL: Elton John + Tom Odell

Remember when rock was young? The 66-year-old Sir Elton Hercules John does, and at this free iTunes Festival gig he'll be showing the younger generation how to really rock a stage: sat down, in a wig, with four decades' worth of epic piano anthems including his new album 'The Diving Board'. Supporting – and taking notes on the gap-toothed ivory-tinkler's chops from the side of the stage – is rising singer-songwriter Tom Odell, with songs from his debut album 'Long Way Down'. Win tickets on the iTunes Store, via www.itunesfestival.com.