Sir Paul McCartney has urged his fans to dig deep for the victims of Superstorm Sandy because he shudders to think about those left homeless by October's (12) natural disaster.

The former Beatles star will be among the big names performing at the 12-12-12 Concert for Sandy Relief benefit in New York on Wednesday night (12Dec12), but he wants people to keep donating to the American Red Cross and other charities in an effort to help those suffering a big freeze this winter.

He tells music network Fuse, "People think, 'It's done, it was a bad storm,' but the idea that it's still leaving people suffering on the streets, people without their homes, without power, without shelter...

"I would urge people to get involved and really make a difference to these people who are otherwise gonna have one hell of a winter."

MCCartney will join Bon Jovi, Bruce Springsteen & the E Street Band, the Rolling Stones and Billy Joel, among others, at the benefit concert on Wednesday.