Eric Clapton and Coldplay have been added to the star-studded line-up for the 12.12.12. The Concert for Sandy Relief at New York's Madison Square Garden next week (12Dec12). They will join the likes of Sir Paul MCCartney, Bruce Springsteen, Billy Joel and Jon Bon Jovi on the bill for the big gig, which will raise funds for the recovery effort following America's superstorm Sandy.