Sandy relief concert A video of President Barack Obama with victims of Superstorm Sandy plays in Madison Square Garden as The Who perform on Wednesday. (Don Emmert, AFP/Getty Images /December 12, 2012)
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.
Proceeds are to go to the Robin Hood Foundation to provide disaster relief in the wake of Superstorm Sandy.
Tune in to Pop and Hiss at 4:30 p.m. Pacific on Wednesday to catch the action live online.