On Day 14, I pursued an unusual goal: practice the music intended for prepared piano, on an unprepared piano. I specifically focused on John Cage's Sonatas and Interludes for Prepared Piano, and a piece for piano four hands I recently wrote for pianist Adam Tendler and myself. The results were illuminating, and it gave me new insights into a few of the Cage Sonatas, as well as possibilities for practicing in the future.