Angel Snow is one of the lucky ones — a singer-songwriter who came to town, stuck it out half a decade, played every little show any old place she could, and has an excellent, buzzed-about album to show for it. It’s hasn’t just been a roll of the dice, though. There’s a reason the Krausses — brother Viktor and sister Alison — wanted in, he as songwriting and recording collaborator, she as the recipient of their freshly finished material. “Lie Awake,” a hypnotic song that Alison cut for Paper Airplane, is now the first of a dozen tracks on Snow’s new self-titled effort. That and the songs that follow are delicately sculpted from confessional pop and folk sensibilities, with jazz and finger-style blues shadings. And Snow’s singing — no more demure than that of indie darling Sharon Van Etten — is dusky and rich. She dares make sensual use of her middle and low range, rather than reaching for some anthemic, made-for-Grey’s Anatomy moment.