San Francisco label Superior Viaduct has singlehandedly revived the late-Seventies Bay Area underground music scene, reissuing out-of-print albums from artists who might have otherwise fallen into obscurity. Though it may seem like an exercise in nostalgia, Superior Viaduct’s releases show how fresh and daring the music sounds even today. Experimental trio Factrix is among one of the best examples. On its only studio album, 1981’s Scheintot, which Superior Viaduct reissued last year, Factrix crafts minimal, moody post-punk from sharp electronic noise, droning bass, spastic guitar riffs, analog drum-machine beats, and hazy vocals. The band clearly draws from UK industrial innovators Throbbing Gristle, but hidden beneath the noise are hints of The Velvet Underground’s headiest jam sessions. And while Factrix’s songs groan and moan and ooze like a gaping wound, they are surprisingly tight. Who knows how the band will sound at The Night Light (311 Broadway, Oakland), in its first appearance in more than thirty years, but this show has the potential to be as strange and rare as the music itself. With Bronze and DJ Special Lord B.