This book focuses on the sound of Add9 triads. Hristo Vitchev presents these in two keys: F major & F Melodic Minor. From triads, Hristo add the 9th as a suspension or inner line movement. This creates a more fluid way of looking at diatonic triads. As I practiced the material in this book, I … Continue reading Book Review: Add9 Triad Workout (major / melodic minor) by Hristo Vitchev