In today's climate of a blues band seemingly on every corner with "the next Stevie Ray Vaughan" being touted every other minute, it's hard to imagine a time when being a white blues singer was considered a novelty. But in those heady times of the early '60s and the folk and blues revival, that's exactly how it was. Into this milieu came three young men who knew it, understood it, and could play and sing it; their names were Koerner, Ray & Glover. They were folkies, to be sure, but the three of them did a lot -- both together and separately -- to bring the blues to a white audi...