The last time you whistled a tune or hummed a song-why did you choose that one? You may not consider yourself a musical person, but your little act of unintended music may be the key to unlocking within you a wealth of unsuspected creativity-a kind of creativity that goes way beyond music, too. Lane Arye, PhD, a musician himself, focuses on the music that people do not intend to make. Using the highly regarded psychological model called Process...