CITR’s 24 Hours of Radio Art in a snack sized format. Dark Ambient. Drone. Field Recordings. Noise. Sound Art. Or something. This Friday night’s broadcast features reissued Tomoyuki Aoki / Harutaka Mochizuki, new Lettera 22, Saharah-Bib / Juan A?ngel Italiano, Nils Quak, and Unexplained Sounds Group’s Anthology of Contemporary Music From Greece.