Markus Lüpertz, Baumstamm Abwaerts-Dithyrambisch (Tree Trunk Down-Dithyrambic), 1966, distemper on canvas, 98 1/2" x 71". Hall Collection, Courtesy Hall Art Foundation.© 2017 Artists Rights Society (ARS), New York / VG Bild-Kunst, Bonn. Photo courtesy The Phillips Collection.