Western Swing Chords On The Blues

I was listening to Leo Sidran's podcast The Third Story this week, in particular his interview with pianist and harmonica virtuoso Howard Levy. It's a great interview, including, among other things, Levy's explanation of how the proportions found in common Western scales can also be found in various Afro-Cuban rhythms, and his demonstration of one of his favorite practice techniques, namely, transposing entire Bach inventions through all twelve keys the way some musicians warm up with scales. And this is after talking about and playing through his revolutionary technique for making completely chromatic music on any diatonic harmonica. By that point in the interview, what I really wanted to know was: how does someone find the time to even think about this many things, much less practice them with this kind of depth and detail? And it's not something obvious, like "trust fund, no kids," because he also explains in the same conversation how he left...