Sure you know about Chicago jazz venues like the Green Mill, Andy's and Fred Anderson's Velvet Lounge, but what about Hungry Brain, Hideout, or even Skylark? Chicago has a rich history of jazz, from the speakeasies of the '20s, to a thriving community of innovators that exists today...Ratchet, taking place Monday nights at the Skylark in Pilsen, is a jazz series in the vein of Umbrella Music, Immediate Sound, and Elastic Arts, which are collectives and series in this small, but visionary creative music community.