Though he's created some of the most essential, elemental blues in musical history, B.B. King has never shied away from exploring different directions, and some might say he's occasionally ventured too far afield. ONE KIND FAVOR should silence those doubters; with the help of superproducer T-Bone Burnett's roots noir approach, it finds King delivering gritty, impassioned interpretations of the tunes that influenced him in the 1950s. From his soulful, syncopated take on Blind Lemon Jefferson's country blues classic "See That My Grave is Kept Clean" to the Chicago-style stomping takeover of the Mississippi Sheiks' "The World Is Gone Wrong," King proves that at the age of 82 he can still turn out fiery, energetic music as undeniably vital as anything being produced by artists a third of his age.