This is a great book for musicians who want to learn jazz harmony and professional sounding chord voicings. I went over this book again in order to teach the concept of voice leading to jazz students. The movements of individual notes in chords for voice leading is easiest to see on piano. I am a professional guitarist who works at a college and I was hoping this book would help my students but many students cannot read music well or understand the visual nature of the keyboard. While it may be too difficult to use at the college level, which is what this book was originally made for, I still think it is a great reference for myself.