Jeffrey Lewis's Crass covers record, 12 Crass Songs, is pure, unfettered genius—as many people have been converted to Crass through the album's flattering acoustic treatments as introduced to Lewis. Everyone wins! But Lewis's own songs are, if not as anarchically charged, every bit as compelling as his covers, describing with comic (and sometimes comic-strip) detail subjects ranging from psychologically fraught encounters with Will Oldham to the nature of life itself. With witchy, apocalyptic howler Arrington de Dionyso of Old Time Relijun. (Comet, 922 E Pike St, 322-9272. 9 pm, $8, 21+.)