There's a musicologist named Peter van der Merwe whose theory is that the blues generates tune families, and that their similarity to each other is in fact part of the pleasure you take in them - rather than the differentiation in which Jerome Kern and George Gershwin indulged to great effect.

I don't like most world music because you need to know what the words are to really understand it.

I was never really a bohemian. I was a sloppy guy who liked cheap apartments and the arts, and who was very left-wing politically as the 60's progressed, though it took me a little while.

Robert Christgau Quotes