The venerable Delbert McClinton is a legend among Texas roots music aficionados, not only for his amazing longevity, but for his ability to combine country, blues, soul, and rock & roll as if there were no distinctions between any of them in the best time-honored Texas tradition. A formidable harmonica player long before he recorded as a singer, McClinton's career began in the late '50s, yet it took him nearly two decades to evolve into a bona fide solo artist. A critics' darling and favorite of his peers, McClinton never became a household name, but his resurgence in the '90s...