An electronic synthesizer performance group founded in 1973 in San Francisco by William E. Jackson (Will aka Stonewall, Willie B Dread) and Mark Drummond Sprague (aka Naut Humon). Members included Zev Weisser, Chris (Rex Probe) Gruelich, Perry Spinali and Gabriel Stern.
The group performed at theaters, colleges, clubs, galleries, multimedia events, and "found" locations including Marin County gunsite tunnels and Joshua Tree Natl. Park. Their shows were conceptual in nature, radical in their audience inclusiveness ala Living Theater. The founders first collaborated to form Theadra Matr experimental theater group in 1968; they disbanded in 1975 to separately form Rhythm & Noise, TO, Kindread, Recombinant Space, and Scraw Krover Press.