Volume 1 - Diatonic harmony. Real-world, practical advice on how to implement it on the piano. This series is unique in several provides clear, understandable explanations of how harmony works with examples and illustrations; identifies all the things you need to know when it comes to playing in the real world; written with the goal of minimizing the learning curve and maximizing the absorption potential. Many important concepts, difficult to find elsewhere in one place, some of which cannot be found in any other written venue. The correct way to improvise including avoid tones and why they are important. You will find this book useful you want to learn how to play piano, you want to learn how to improvise, or you want to learn jazz. An excellent resource especially if you find yourself unable to get past certain obstacles such as the ability to improvise.