Jennifer Lopez is already maximizing her time at the Sundance Film Festival.

The multi-hyphenate touched down in Park City, Utah this weekend ahead of the world premiere of her festival selection Kiss of the Spider Woman from filmmaker Bill Condon. But before Sunday night’s showing at the Eccles, Lopez reminded fest-goers and revelers of her other talents by jumping into the DJ booth at Tao Park City.

Lopez joined DJ Chase B for a surprise performance at the Casamigos-fueled pop-up, which again proved to be the late-night hot spot. Said to be “in good spirits” upon arriving to Tao according to an insider, Lopez mingled with friends (including Unstoppable co-star Jharrel Jerome and Kiss of the Spider Woman co-star Tonatiuh) and danced it up as Chase B played her hits like “Jenny from the Block” and “Get Right.”

Then came the surprise performance. Lopez, wearing a full look from...