On Wednesday night a heavyweight lineup of marquee acts will cram New York's Madison Square Garden for a relief concert to benefit areas devastated by October's Superstorm Sandy.
Billed as "12-12-12: The Concert for Sandy Relief," the event will feature performances by the Rolling Stones, Bruce Springsteen & The E Street Band, Kanye West, Alicia Keys, the Who, Roger Waters, Eddie Vedder, Bon Jovi, Billy Joel and Eric Clapton.
As previously reported, Paul McCartney is expected to perform alongside Dave Grohl and bassist Krist Novoselic -- surviving members of pioneering grunge band Nirvana.
The concert could be one of the most-watched music events in history with more than 2 billion people having access through TV broadcasts and online streaming. Movie theaters in New York, New Jersey and Connecticut will also screen the special.