Art 21 James Turrell Ann Hamilton Laylah Ali Laurie Anderson James Baldessari Matthew Barney Louise Bourgeois Cai Guo-Qiang Cao Fei Vija Celmins Michael Ray Charles Mel Chin Trenton Doyle Hancock Oliver Herring Jenny Holzer William Kentridge Margaret Kilgallen Kimsooja Jeff Koons Barbara Kruger