Incidentally, old recordings of hillbilly music (the recorded root form of old-time, bluegrass, and country music) often include very strong blues elements. Most folks look back only a few years before modern records and radios and see a time when blues was part of the same root form.

The Mississippi old-time duet, Narmour and Smith, brought John Hurt to the attention of the record company. I love that story...

-Greg