"Goodness knows it's weird to be the youngest member of a bill like this and if you're gonna donate tonight just think of a figure which you think might be the average age of the performers then I think we'll raise billions!" Rocker Chris Martin jokes about the veteran musicians who rocked the stage at the 12-12-12 Concert for Sandy Relief benefit in New York's Madison Square Garden, including Sir Paul MCCartney, Bruce Springsteen, Billy Joel, Eric Clapton and The Who. The 35-year-old Coldplay frontman was in fact the third youngest on the bill - Alicia Keys was the youngest at 31, followed by Kanye West, who is three months younger than Martin.