Phoebe Bridgers has one of those voices that can make a rowdy arena crowd go silent and then leap to its feet. I saw it happen when she joined Conor Oberst on stage this past summer at the WXPN XPoNential Music Festival. I can't imagine many people in the crowd knew who she was before they heard Conor invite her on stage for a duet. By the time she was done - standing ovation.

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