Chicago rapper-producer Ibn Inglor injects bone-chilling cold into supersize, austere, and artfully crafted songs. I’m always keen to hear whatever Inglor has in the pipeline, and a couple weeks ago he dropped a single called “Pray for Health,” which is today’s 12 O’Clock Track. The song opens with yawning, distorted synths and closes with solemn trickles of strings, and Inglor’s masterful hand guides the tune’s direction and mood the whole way. He raps about confronting his own demons and uncertainties, but his confident control gives “Pray for Health” an ironlike thump.