Among the big draws were Sabrina Carpenter, who closed out the festival with surprise guests Earth, Wind & Fire, and A$AP Rocky, who performed from a life-sized helicopter onstage. The Marías, Dominic Fike, and Finneas were among the highlights from the Chicago fest’s final day on Sunday at Grant Park.

Our pool of genuinely funny music performers has never been large. Musicians get timid about humor, with reason. Audiences take earnest artists seriously and let time and taste catch up to anyone

On the final night of Lollapalooza, one of the festival's biggest headliners brought out music legends to help the crowd just "let loose and groove."