Aphex Twin follows Newton's Third Law: For every action, there is an equal and opposite reaction. Describing his music becomes a web of contradictions. For every violent and vitriolic "Come to Daddy," there is an absurd children's song such as "Milkman." For every acid anthem ("Digeridoo"), there is a frazzled complex of rhythms ("INKEY$"). For every surging, grinning dance track such as "Donkey Rhubarb," there is the near stillness of "Weathered Stone" or "Parallel Stripes." A track-by-track breakdown may not equate a balance of yin and yang, but throughout his career as Aphex Twin, AFX, Caustic Window, Polygon Window, the Dice Man and countless other pseudonyms, Richard D. James has created what is perhaps the widest spectrum of electronic sound by a single artist.