irishenglish, thanks for adding the names of several African bluesmen.

Here's a link to a YouTube clip of the great Blues musician from Mali, West Africa, Ali Farka Toure:

http://youtube.com/watch?v=y5Nem-PNHLY

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There are a number of videos I selected this one because of Ali Farka Toure's comments [translated into English] which are included in that video. That video was added to YouTube March 2006. So far it has had 100,017 viewings. There are also 132 comments to date.
I'd give the comments section a mixed review. But some of the comments are interesting as well as informative.