Music director Scott Bomar has assembled a pretty solid collection of Mississippi hill country blues. If you don’t connect to the Jessie Mae Hemphill, R.L. Burnside and Black Keys (who share a static groove and minimal riff with their Mississippi influences) tracks included here, the style will probably never work for you. It’s a pretty good introduction, though, and Bobby Rush’s “Chicken Heads” is always a treat. The question here is whether or not Samuel L. Jackson can be a bluesman, and not surprisingly, the answer is yes. Only on the over-the-top adaptation of “Stackolee” does he sound like he’s doing Jackson shtick, preaching like the hitman in Pulp Fiction. He’s convincingly meditative on “Just Like a Bird Without a Feather” and garrulous on “Alice Mae.” This is no substitute for the form’s masters, but it’s a credible addition to the canon.