Back in 1991, Jane's Addiction frontman Perry Farrell wanted to organize a farewell show for his band. One thing led to another, and that simple idea turned in to so much more. Lollapalooza continues to be one of the biggest festivals of the summer. And this year marks the 20th anniversary of Lollapalooza.

Over 120 bands/acts will entertain the masses August 5-7 at Grant Park in Chicago, IL. Some notable acts, for fans of rock, include (for the first time at Lollapalooza) FOO FIGHTERS, plus A Perfect Circle, the Deftones and Cage The Elephant. Get the complete lineup here.

Get all other Lollapalooza related news and info HERE.