Delta Blues

I have just discovered something monumental. It is called the Delta Blues. Sure I'd heard one or two songs in a movie here and there... but tonight I walked into a pub and there was this guy playing this music. He was up on stage playing the weirdest looking guitar I had ever seen. He was using a slide and singing things that... I am speechless... I have never heard anything like it before. It moved me in a way that, up till now, only Thomas Tallis and J.S. Bach had been able to do- and it wasn't just the songs, it was the style itself. I just do not know what to say...