Speaking of which, check out the McCready Brothers, from Truro, if you like the folk blues. Jim is an absolutely top-notch harmonica-player; his brother A.T. plays finger-picking guitar, and sings in a warm and passionate style reminiscent of Mississippi John Hurt: http://www.geocities.com/mccreadybrothers/home.html ...
Unfortunately, the samples on their site don't seem to be working. If I come across some anywhere else, I'll let you know. However, I thought their CD was so good that I bought about four extra copies to give away ... and I'm a notorious tight-wad ...