Composer, historian, builder, journalist, activist, kayak instructor – Bob Ostertag's work cannot easily be summarized or pigeon-holed. He has published more than twenty CDs of music, two DVDs, and five books. His writings on contemporary politics have been published on every continent and in many languages. Electronic instruments of his own design are at the cutting edge of both music and video performance technology. He has performed at music, film, and multi-media festivals around the globe. His radically diverse collaborators include the Kronos Quartet, postmodernist John Zorn, heavy metal star Mike Patton, transgender cabaret start Justin Vivian Bond, British guitar innovator Fred Frith, EDM star Rrose, and many others. He is rumored to have connections to the shadowy media guerrilla group The Yes Men. His He is currently a professor at the University of California at Davis. His most recent book is "Sex Science Self: A Social History of Estrogen, Testosterone, and Identity" (U Mass Press).