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 who takes their own importance with a grain of salt. That’s one of the reasons why Sabrina Carpenter played so exuberantly in Grant Park on Sunday night. She closed Lollapalooza with real effervescent wit, even joy. Imagine! Looking goofy on stage! We had the introspection of Tyler, The Creator; the gated-community angst of Gracie Abrams ; and the sunny rebellion of Olivia Rodrigo .

But god, Sabrina Carpenter is fun.

Her stage, festooned with a huge curling “SC” traced in stage lights, not only paid homage to Chicago as the original home of “Soul Train,” she and her dancers threw in their ow

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