Rap and entertainment superstar Tyler, the Creator served as the opening night headliner for the Lollapalooza Music Festival in Chicago's Grant Park on Thursday night, but he was almost forced to cancel his performance.

In a brief hourlong set, the rapper packed in new and old jams. In addition to a platter of “Don’t Tap the Glass,” there was a big spotlight on “Chromakopia” and its verbose tracks like “Rah Tah Tah” and the fan favorite lick of “Sticky.

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