At Audium, the lights go out and the sound moves around you.
What it is
Audium is a sound art event presented weekly in San Francisco since 1967, according to Wikipedia. Composer Stan Shaff created it, performing on equipment designed by Doug McEachern, in a completely dark theater built for "choreographing sound in space." A building in downtown San Francisco, formerly a bakery, was converted into the theater, and the first public show there was on Oct. 31, 1975. The system started with 136 speakers.
This week
Audium's site says its 176 speakers send sound past, over and under listeners in a 49-seat theater. For Halloween it lists The Depths, by Dave Shaff, on Oct. 30 and 31, described as a sound world "beneath the surface" that "asks for your patience." Audium V: Rewind, a remix of Stan Shaff's 1969 work by David Shaff, ran Oct. 9 to 24. Audium says it is open most weekends, and each month's schedule goes up on the ticket site about two weeks in advance.