I heard this on Morning Edition on National Public Radio, the other day (Aug. 5), and thought you all might like to give it a listen. Here is the program description and the link. It is worth a listen:

Tape & copy on a weekly tradition of the Friday night Jamboree at the Floyd Country store in Floyd, Virginia. For the past fifteen years musicians and staff volunteer their time and effort to create an atmosphere where the residents listen and dance to bluegrass and old-time music. (7:19) go here & scroll down to the heading for the Friday Night Jamboree