Example 16. Carrillo’s metamorphosis to the double of Johann Sebastian Bach, Prelude in C Major, BWV 846; after Leyes, 23–25. In Carrillo’s original, what should be Es in m. 23 are misprinted as Fs; I correct this mistake below for clarity. In the accompanying audio, I play the opening measures of Bach’s Prelude, as originally notated, on Carrillo’s whole-tone piano. Recorded by me at the Centro Julián Carrillo, San Luis Potosí