Imagine if CocoRosie were more introverted and actually good. Boom, you have OHMME. Okay, that’s reductive, but the young women in OHMME—Chicago musicians Sima Cunningham and Macie Stewart—engage in intricate vocal interplay not too different from that of the Casady sisters and they radiate a similar arty aura. But the songs on OHMME's self-titled EP bear grittier timbres and more folk-inflected melodies, making for a much more enjoyable listening experience. For the follow-up, Parts, though, OHMME—both classically trained pianists who've gone rogue—tapped Windy City heavies such as Tortoise's Doug McCombs, cellist Tomeka Reid, and jazz saxophonist Ken Vandermark to bolster their formidable songwriting, resulting in a record that both rocks with sinewy, torqued verve and spaces out into meditative reveries. by Dave Segal