The line up for Lollapalooza has been announced. [lastfm]Soundgarden[/lastfm] along with [lastfm]Green Day[/lastfm] and [lastfm]Lady Gaga[/lastfm] will be headlining the three-day music festival. This years music fest happens on August 6th-8th in Grant Park in Chicago. The Strokes, Arcade Fire, Pheonix and more will also perform. For more info, including the full line up check out Lollapalooza.com.