I heard them in Virginia last summer, about a week after they were on NPR's Prairie Home Companion. The PHC episode was accessible online, but I don't remember the date or have time to track it down at the moment. In any case, the CCD's are well worth hearing live if you can. Fine OT music, and some more current interpretations as well.

The band got together after meeting at Appalachian State University where, in addition to having a football team that can beat Michigan, there's a great program in Appalachian Studies tht offers BA and MA degrees and has, uniquely in the U.S. I suspect, separate professors of OT and Bluegrass music.