In Lionel Popkin's "Ruth Doesn't Live Here Anymore," the titular Ruth refers to Ruth St. Denis, a doyenne of early modern dance (Martha Graham was a pupil). St. Denis was known for her "oriental" dances, which Mr. Popkin wrestles with. Valid artistic influence or cultural appropriation? The Los Angeles-based Mr. Popkin, who is half-Jewish and half-Indian, turns the question on his own work with help from three dancers, two musicians and a leaf blower.