»A Colour-Coding of Partch’s Ptolemy Keyboard Based on his Chromelodeon I«, (2008). Digital print applying the arbitrary colour scheme used by the American composer Harry Partch on the microtonal keyboard he constructed, called the Chromelodeon I, to his first-ever constructed instrument, the Ptolemy. The only record of the Ptolemy is a black & white photo. The colour print represents one “octave” (comprised of 41 distinct notes) of the Ptolemy keyboard as it may have appeared. The original instrument was misplaced by Partch sometime in the 1940s. By Craig Leonard.