“If today people so often take Mississippi delta blues for heart of the form, it’s in no small measure because the collector-researchers of the ’50s and ’60s, and the blues rockers who followed their lead, taught us to think that way. In fact, those edgy, relatively marginalized, rural guitar players had, for the most part, been little-known artists with limited sales among the black Southern audience, which generally saw blues as dance music. But they presented challenging sounds and images irresistible to the white collector specialists.”