Some bands have to make daring, even drastic changes from album to album to find a sound they can call their own. Not the Black Heart Procession–on their 1998 debut, 1, they seemed to arrive fully formed, and if there were any progressions to be found on their next two full-lengths, they were about as noticeable as continental drift. Then came 2002’s excursion into lounge-Latin eroticism, Amore Del Tropico, followed two years later by a jury-rigged collaboration with Dutch prog rockers Solbakken for Konkurrent’s “In the Fishtank” series, both of which sounded like major seismic events. But Black Heart’s newest, The Spell (Touch & Go), is a return to basics: a patina of weathered romance, grandly melancholic arrangements, Pall Jenkins’s plaintive howl. Not that everything about the new disc is a downer: the video for the first single, “Not Just Words,” actually hits joydirt. If there’s anything better than watching Shannyn Sossamon spin around on a mountain, it’s watching four of her spin around on a mountain. The Castanets and the Devics open. Sun 8/6, 9 PM, Double Door, 1572 N. Milwaukee, 773-489-3160 or 312-559-1212, $16.