Greensky Bluegrass may take the stage with a banjo, mandolin, dobro, upright bass and acoustic guitar, but don’t let the name or the instrumentation fool you. These guys owe as much to jam band titans like the Grateful Dead and Phish as they do to bluegrass luminaries like Bill Monroe and Flatt & Scruggs.

“We have a lot of influences that have been swirling around in our heads for a long time, and bluegrass is one of them,” explains dobro/lap steel player ...