Last June, Sarah Jarosz found herself in the bathroom of the Sheridan Opera House in Telluride, Colorado, swapping songs with Sara Watkins and Aoife O’Donovan. 

“It was very last minute,” says Jarosz, who’d come to Colorado that weekend to perform a solo set at the Telluride Bluegrass Festival. “The Punch Brothers were playing…

Source: RollingStone
Link: See Sarah Jarosz's Folk Supergroup Cover John Hiatt