I was looking for the core of it--the expression. You would have no jazz without blues out of slavery--that most recent and particular version of slavery, not us poor Celts for example, under the Roman boot. They put those people through misery, not just in America. But there's something produced by its survivors that is very elemental. It's not something you take in in the head, it's something you take in in the guts. It's beyond the matter of the musicality of it, which is very variable and flexible. There's loads of kinds of blues. There's very light kind of blues, there's very swamp kind of blues, and it's the swamp basically where I exist. Listen to John Lee Hooker. His is a very archaic form of playing. Most of the time it ignores chord changes. They're suggested but not played. If he's playing with somebody else, that player's chord will change, but he stays, he doesn't move. And it's relentless. And the other, the most important thing apart from the great voice and that relentless guitar, was that foot stomp, a crawling king snake. He carried his own two-by-four wood block to amplify his stomps. Bo Diddley was another one who loved to do just that one elemental chord, everything on one chord, the only thing that moves is the vocal and the way you're playing it. I really only learned more about this later on. Then there was the power in people's voices, like Muddy, John Lee, Bo Diddley. It wasn't loud, necessarily, it just came from way down deep. The whole body was involved; they weren't just singing from the heart, they were singing from the guts. That always impressed me. And that's why there's a lot of difference between blues singers that don't play an instrument and blues players that do, be it piano or guitar, because they have to develop their own way of call and respond. You're going to sing something and then you've got to play something that answers or asks another question and then you resolve. And so your timing and your phrasing become different. If you're a solo singer you tend to concentrate on the singing, and most times hopefully for the better, but sometimes it can be divorced from the music in a way.

K.Richards. Life