Masters on the roof of the Bauhaus building, c.1926, From left to right: Josef Albers, Hinnerk Scheper, Georg Muche, László Moholy-Nagy, Herbert Bayer, Joost Schmidt, Walter Gropius, Marcel Breuer, Wassily Kandinsky, Paul Klee, Lyonel Feininger, Gunta Stölzl and Oskar Schlemmer. Bauhaus-Archiv Berlin/Centre Pompidou, Paris Bauhaus: Art as Life, currently on display at the Barbican Centre,…