Bo Gehring's background includes computer animation, 3D audio, and sculpture. For several years he has transformed tiny clips of music by Thelonious Monk and others into complex 3D sculptures in polished stainless steel, machined foam, and other materials. The largest of these to date is the 160' Monk Wall commissioned by the Katonah Museum of Art. About a year ago, Gehring began creating abstract video animations and now has adapted those techniques to make live portraits set to music by "flying" a video camera with a computer-controlled milling machine.