Gracie Abrams brought out surprise guest Robyn, Cage the Elephant honored Ozzy Osbourne, and more highlights from the first day of the Chicago fest

Gracie Abrams, Sierra Ferrell and Barry Can’t Swim are among those playing Thursday before headliners Luke Combs and Tyler, the Creator take the stage at night.

Attendees eagerly began the Lollapalooza music festival in Chicago, with diverse acts and robust ticket sales.