Bob Ostertag most often performs solo. These performances may include compositions such as Sooner or Later [link to the Sooner or Later recording page], or improvisations on a wide variety of electronic instruments (gamepads, iPads, modular synthesizers, etc.)
From 2015-2016, he did a year-long world tour [link to the world tour page], which was largely solo concerts. The result of which is the Wish You Were Here recording [link to Wish You Were Here], which includes portions of solo concerts in Malang (Indonesia), Surabaya (Indonesia), Lima (Peru), Montevideo (Uruguay), Beirut (Lebanon) and New York City.
His reflections on this somewhat epic experience form the basis of the title essay in his most recent book: Facebooking the Anthropocene in Raja Ampat: Technics and Civilization in the Twenty-first Century [link].