"Dr. Adams, who was also drawn to themes of repetition, painted one upright rectangular figure for each bar of “Bolero.” The figures are arranged in an orderly manner like the music, countered by a zigzag winding scheme, Dr. Miller said. The transformation of sound to visual form is clear and structured. Height corresponds to volume, shape to note quality and color to pitch. The colors remain unified until the surprise key change in bar 326 that is marked with a run of orange and pink figures that herald the conclusion."

www.nytimes.com/2008/04/08...08brai.html