Lollapalooza announced the 2012 lineup for their annual summer concert festival taking place in Grant Park, Chicago. Lollapalooza will be taking place from August 3-5, 2012 and has a lineup of your favorite artists. Lollapalooza has over 130 bands from across the globe joining their music festival. Three-day tickets to Lollapalooza are now on sale, and a limited number of single-day tickets will go...