Almost a year ago, Erika Wennerstrom and her band, the Heartless Bastards, released an excellent LP, Arrow, which followed up the possibly more excellent The Mountain. Now that the hoopla surrounding the release of Arrow has passed, the Austin-based act is in a sweet spot. The band's set last March at Lola's in Fort Worth leaned heavily on the newest material, and for good reason. Every band wants to break the fresh stuff out. Wennerstrom's dusky, low-running voice is a fine instrument unto itself, so it's not really of much concern which album she sings from — as long as it's her singing.