Iowa City attracts songwriters; you might even say it creates them. The “Class of 1970,” which includes Dave Moore, Greg Brown and Bo Ramsey, set the template: rooted in American folk music, but shot through with the personal and the cosmic. Those older artists cast no shade on the younger cohort that includes Ed Gray, Sam Locke Ward and Brooks Strause. Best know for the raucous Old Scratch Revival Singers, Brooks Strause is a prodigious songwriter and a ferocious live performer. In each of his songs, he inhabits a character the way Robert De Niro does. He commits fully, and when he howls like a bereft soul running from the Devil, you can smell the brimstone.