(Music Instruction). A self-study course with illustrations & examples for you to write & check your answers. Topics include: major scales, minor scales, modes and other scales, harmony, intervals, chord structure, chord progressions, chord substitutions, and much more. This book is a workbook. Contained herein are the eseential "backbone" concerts for the working musician. These are the things you must know. It may take a year to work through and thoroughly understand and memoirze all that is in this book and a lifetime to perfect it. That's okay. You will own it and never forget it.