1968 is when it all changed. On December 9 that year, Douglas Engelbart, a computer scientist at Stanford Research Center, made a 90-minute video presentation that revolutionized the world of computers. He didn't show up on stage at the Computer Conference in San Francisco, instead, he teleconferenced from his research lab 30 miles away -- an unprecedented feat at the time. Now almost half a century later, "the mother of all demos" is being resurrected as an avant garde opera called The Demo. Composers Mikel Rouse and Ben Neill re-imagine Engelbart's demo and the defining moments in his life that led up to it through a hybrid theater performance.