How many blues artists remained at the absolute top of their game after more than a half-century of performing? One immediately leaps to mind: Charles Brown. His incredible piano skills and laid-back vocal delivery remained every bit as mesmerizing at the end of his life as they were way back in 1945, when his groundbreaking waxing of "Drifting Blues" with guitarist Johnny Moore's Three Blazers invented an entirely new blues genre for sophisticated postwar revelers: an ultra-mellow, jazz-inflected sound perfect for sipping a late-night libation in some hip after-hours joint. B...