Modern mainstream radio is a vast wasteland of corporate music programming and empty-headed talk-radio partisans preaching to the converted, but there’s a secret universe of local underground radio stations that supply the actual soundtracks to our lives. At Zebulon’s Open Transmission, the focus is on four independent radio stations — KXLU, Dublab, KCHUNG and Orange Radio — that champion “the most unique, obscure, diverse and at-times bizarre artists [who] shift the cultural landscape of the city.” Turn on, tune in and drop out as DJs, musicians and artists TBA celebrate college station KXLU, the sampling experimentalists at Dublab, arty Chinatown radio station KCHUNG and rap-minded Orange Radio.

Zebulon, 2478 Fletcher Drive, Elysian Valley; Sat., July 20, 7 p.m.; free. (323) 663-6927, zebulon.la

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