Presents the normally complex subject in a clear and concise manner. Part 1 unfolds the basics of musical patterns and relationships, then shows how the most common scales are built and how they related to one another. An in-depth study of the construction of major, minor, blues, modal, dominant, diminished and whole-tone scales is included, as well as the structure and development of three-part chords. Everything is studied in 12 keys with dozens of musical examples and practice exercises.