MOSES AND AARON finds Jean-Marie Straub and Danièle Huillet, through their exemplary craft, transforming a familiar Biblical tale into a borderline-surreal cinematic opera of seemingly endless possibility. In expressive, melodic tones, the fraternal pair debate God’s true message and intent for His creations, a conflict that leads their followers — in extravagantly choreographed song and dance — towards chaos and sin. Set almost entirely within a Roman amphitheater whose history lends every precise line-reading and gesture, every startling camera move and cut, a totalizing force, Straub-Huillet’s adaptation of Schoenberg’s unfinished opera opens us to the stimulating worldview of a filmmaking duo whose masterful efforts are finally coming to light.