More Than 30 Lessons for All Instrumentalists. This fascinating jazz instruction book for all instrumentalists offers an innovative, scholarly approach to the art of improvisation. It includes in-depth analysis and lessons about: cycle of fifths,diatonic cycle, overtone series, pentatonic scale, harmonic minor scale, melodic minor scale, polytonal order of keys (P.O.O.K.), blues and bebop scales, Ionian, Dorian and other modes, Byzantine and Arabian scales, and much more! A must for allmusicians