With a reputation as the epicenter for “NYC’s unexpected contemporary folk revival” (Wondering Sound), the Jalopy Theatre occupies a tiny corner of Brooklyn, an unshakable nod to New York’s past that recently gained notoriety from the Coen Brother’s film Inside Llewyn Davis. At the center of the Jalopy’s new folk revival is popular New York banjoist (and Jalopy instructor), Hilary Hawke and her collaborative musical partner, Brian Geltner.