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Either through irony or accident, Grace Potter’s four-man backup crew, the Nocturnals, looked very much awake as they filed on stage at Red Butte Garden Sunday to play instrumentals in "Hot Summer Night."

Potter somehow made the amphitheater mercury head north as she began the set from the crowd and voluntarily lost her shawl into the front row after she hit the stage, unveiling a healthy bit of skin along with a sprawling vocal scale.