Have you heard the DVD-A American Roots Music?

I have seen it and heard it and greatly appreaciated it. It starts in the early 1900's and gives you a documentary of the beginnings of all types of American Music. Of cource the older stuff is poor quality, but what did you expect. I started this thread to get others to vue it. It is a 2 disc set and has examples of blues, jazz, country, bluegrass, indian, cajun, etc. How they all got started and grew. Rent it, buy it, a must see by everyone. This DVD is a must for a musician. If you seen it already, what did you think of it?