Judging from Colbie Caillat’s chart success — and the wave of coffeehouse singer-songwriters of which she’s a part — it pays to be bubbly, sweet, wistful and affectionate, but not to be deeply moved or moving. Sarah Siskind, thankfully, isn’t afraid of conveying a little passion. Her voice is immediately recognizable — inflamed with Appalachian soul — and her songs, including a bunch of those on 2009’s Say It Louder, smolder with soul-plumbing urgency, which is a reason why they’ve been cut by Alison Krauss and covered by Bon Iver. Siskind’s stripped-down new album Novel will be out in a couple of months, and the first single, “Yellow & Blue” turns her introspection outward. Its colorful, impressionistic video (there will be videos for each song on the album) is the work of Chris Pandolfi, banjo player and videographer for the Infamous Stringdusters, of which Siskind’s bass-playing husband, Travis Book, is also a member.