If there's one element you can find in the different incarnations of Nathaniel Rateliff's fiery Americana, it's soul. And that soul has its roots in a richly diverse lineage. The toe-tapping energy of The Spinners' Technicolor funk on “Rubberband Man” fuels his band's fire when they open up a groove, and he cops the exquisite, love-pained cry of Ray Charles' “A Fool for You” in his aching, vulnerable moments.