The core engine of the book focuses on how to smoothly transition from one key center or mode to another. It answers the age-old guitar question: “If the rhythm section switches from a major chord to a minor chord built on the flat-five, what scale notes do I change to keep my solo seamless?” Core Concepts Found Within the Book
The book you are searching for— Progressions and Improvisation —is often considered the capstone of the core series. It is the final volume in the basic Guitar Grimoire Series, intended to be used after you have mastered the scales and chord voicings from the previous books. It is described as "the most thoroughly exhaustive compendium of chord progressions ever published". The Guitar Grimoire Progressions And Improvisation Pdf 34