"I know that people come out and spend eight to 10 hours a day here. Every year, we're trying to improve the festival and really deliver one of the highlights of everyone's summer," Hickey said.
Hickey said part of the goal of Lolla is to expose fans to up-and-coming bands.
"I think musical discovery is part of the Lollapalooza experience," she said. "You come for the headliners and you will stumble upon some of your new favorite bands along the way."
Lollapalooza was created by Jane's Addiction front man Perry Farrell in 1991. It was a touring festival for years. Then in 2005, it was reformatted and brought to Chicago as a destination festival in Grant Park.
"We're going to be here for at least another 10 years. Ten percent [of the] proceeds go to the Parkway Foundation. Last year, Lollapalooza raised $1.6 million for Chicago's parks," Hickey said.