Article Photos: Springsteen, Gaga join Stones; Newtown noted 4/6

Musician Bruce Springsteen, center left, performs with, from left, Ronnie Wood, Mick Jagger, Charlie Watts and Keith Richards of The Rolling Stones at the Prudential Center in Newark, NJ on Saturday, Dec. 15, 2012. (Photo by Evan Agostini/Invision/AP)