Sater has worked with System of a Down's Serj Tankian on a musical version of Aeschylus's tragedy, "Prometheus Bound", directed by Diane Paulus, which opened at the American Repertory Theater on March 4, 2011, to good reviews. The production featured Gavin Creel, Lea DeLaria, Uzo Aduba, and Lena Hall. The A.R.T. partnered with Amnesty International on Prometheus Bound, dedicating each performance to a different prisoner of conscience around the world. “The Hunger”, a single from the show recorded by Shirley Manson, has been released on iTunes, with all proceeds going to Amnesty International. Serj Tankian also recorded two songs from the show, "Weave On" and "Tyrant's Gratitude" for his album "Harakiri".