Photos: Lollapalooza 2012 rocks Chicago
The Associated Press
Published: August 7, 2012 08:21AM
Updated: August 6, 2012 02:45PM
Members of the crowd watch The Black Keys, unseen, play at Lollapalooza in Chicago's Grant Park on Friday, Aug. 3, 2012. (Photo by Sitthixay Ditthavong/Invision/AP)

Images from the 2012 Lollapalooza music festival at Chicago's Grant Park, August 3-5. Headliners included Red Hot Chili Peppers, The Black Keys, Black Sabbath and Jack White.