Springsteen, Gaga join Stones; Newtown noted - Article Photos 3/6

Drummer Patrick Carney, left, and guitarist Dan Auerbach of the Black Keys perform with members of The Rolling Stones, from left, Mick Jagger, Ronnie Wood, Keith Richards and Charlie Watts at the Prudential Center in Newark, NJ on Saturday, Dec. 15, 2012. (Photo by Evan Agostini/Invision/AP)