Yamaha Comprehensive Music Course 7 "Chord Progression Method" with Answer Key Unused item, stored at home. [Book Overview] This book, "Chord Progression Method (with Answer Key)," is a textbook for deepening the understanding of chord progressions in music theory. It was published in 1972 and is provided as the 27th edition. [Author and Publisher] The author is So Iwama, and the publisher is Yamaha Music Promotion Association. [Content and Purpose] This book covers everything from the basics to the applications of chord progressions, aimed at students and music enthusiasts learning music theory. The included answer key makes it ideal for self-study. - Title: Chord Progression Method (with Answer Key) 7 - Series Name: Comprehensive Music Textbook - Table of Contents: Music Theory, Harmony, Composition Techniques, Performance Techniques, Music History Thank you for viewing.