Conley, Joyce: - Joyce Conley holds Ph.D.s in musicology and clinical psychology and has established careers in both fields. She is especially keen on studying the relationship between music and psychology when it comes to learning musical skills. Her pedagogical insights informed the second edition of Scales, Intervals, Keys, Triads, Rhythm and Meter and its companion volume Basic Harmonic Progressions, both coauthored with John Clough.