System Of A Down Frontman Posts Behind The Scenes Footage From His Rock Musical, "Prometheus Bound"

System Of A Down frontman Serj Tankian has posted a behind the scenes peek at his upcoming rock musical, “Prometheus Bound” online over at his Facebook. Tankian worked with playwright Steven Sater on the musical, which will be premiering at the American Repertory Theater in Cambridge, MA on February 25th.