Music fans wait to listen to "Foster the People" perform at the Lollapalooza music festival in Grant Park in Chicago in this file photo taken August 5, 2011. Lollapalooza, the three-day music festival in Chicago's historic Grant Park, was bigger than ever in 2013, with a lineup that honored its alternative rock roots and broadened its appeal to fans of folk, dance, rap and even country music. REUTERS/Jim Young/Files ( LOLLAPALOOZA/ )