After reading today's earlier post, I hope you did go out and read up on Robert Johnson, or heard one of his tunes.
I don't think it needs to be explained who Robert Johnson is, nor what his contributions to music are. I've mentioned them on this blog countless of times, and named his collection the best album to be introduced to blues music. He is the most authoritative force in the genre.
Today marks his 102nd birthday, and here's his classic "Crossroads Blues".