It figures that Ben Kweller, a Texas-bred rock prodigy devoted to tunecraft and lyrical wit, would eventually turn to country, which prizes both. But his new sound, per his new home, is more Austin eclectic than Nashville mainstream; see "Sawdust Man," a roadhouse blues with a chorus ("I'm on top of the Greyhound station/Won't you pleeeeeease come home") that sounds like Harry Nilsson and John...