As part of the new PBS series Bluegrass Underground, a host of talented bluegrass artists performed in the Cumberland Caverns’ Volcano Room in McMinnville, TN last March. Over three days, Greensky Bluegrass, Railroad Earth, Bela Fleck + Abigail Washburn, and Leftover Salmon all hit the stage in a room 333 feet below sea level.

Now we have a great taste of the series, as videos of Greensky Bluegrass’ “Windshield” and Bela Fleck & Abigail Washburn’s “Shotgun Blues” have surfaced. Enjoy them both below:

[Via JamBase, photo by Tory Pittarelli]