[Skooz]

In this visual medium, I cannot let you know what it sounds like, but it looks like this:

[Skooz]

..........and this:

[Mr. Mojo]

Robert Johnson is indeed the essence of 'uncontrived'.

...and you can put Lightnin' Hopkins, Son House, Fred McDowell, John Lee Hooker, and many other blues greats in the same category.

[Rocko]

You forgot this, too....

Another good one.