For their latest, Akron, Ohio duo The Black Keys have brought forth an EP of six songs by Junior Kimbrough. This is no mere dalliance; the late elder Mississippi blues musician was a powerful influence on guitarist Dan Auerbach and drummer Patrick Carney. Their three previous albums, full of dusty grooves and simple but impassioned dynamics, would have found strong rapport with Kimbrough, who unfortunately died before they could ever meet.