Erika Wennerstrom and Heartless Bastards are totally American: They rock, they roll, they follow their muse across the land -- mountains, sea and desert. Moreover, they're simple and immediate both emotionally and sonically, a lot like Crazy Horse, really. But they're American in another sense. Rising up from Arrow's very best tunes -- "Only For You," "Parted Ways," "Simple Feeling" -- is a thick cloud of inchoate restlessness. This isn't a lyrical component necessarily, just this weighty feeling. It's weird. Heartless Bastards aren't the heaviest band in the world, but they actually are.