8. Chicago Youth Symphony Orchestra Makes an Appearance at Lollapalooza 2007

Lollapalooza had always been about rock music until it opened its stage to the classical ensemble Chicago Youth Symphony Orchestra. They shared the stage with My Morning Jacket. That wasn’t their last Lolla appearance as they came back onstage in 2010 and 2011.

7. Three Hours of Led Zeppelin

At The Bath Festival in Somerset, England in 1970, Led Zeppelin etched their name as one of music’s all-time greatest legends. In their 3-hour, 5-encore set, the band played the anthemic Immigrant Song for the first time. It was one of Led Zep’s best and most important performances, and one of music’s most memorable milestones.