Inside Llewyn Davis executive music producer T Bone Burnett considers The Punch Brothers mandolin virtuoso Chris Thile the Louis Armstrong of our time for his genre-bending reshaping of folk classics, incorporating both classical and pop. That's why he hired the Brothers to sing Irish folk ballad "The Auld Triangle" on the film’s soundtrack. Though it's been a year since they released a new album, they'll be ringing in 2014 with a three-night run of music that, like the film's eponymous hero tells us, has timeless appeal: "If it was never new and it never gets old, then it's a folk song."
Dec. 29-31, 9 p.m., 2013
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