(previews start on Sept. 2; opens on Sept. 9) The German expressionist painter Rudolf Bauer receives a dramatic retrospective courtesy of the playwright Lauren Gunderson. This three-character piece, which debuted at the San Francisco Playhouse, centers on Bauer, his wife and his former lover. It explores the dubious bargain Bauer made with Solomon R. Guggenheim, and the betrayal that made him lay down his brushes.