John Coltrane"s recording "Giant Steps" introduced a system of chord progressions and chord substitutions that has challenged even the best jazz musicians. The tri-tonic systems (sometimes referred to as "Coltrane Changes") found in the tunes Giant Steps and Countdown is taught in a digestible way thoughout this method. Etudes show how to reharmonize standard ii-V-I changes with Coltrane Changes. The play-along CD will help students practice and master single-note lines over these chords in all 12 keys. Guitarists will appreciate the chord voicing suggestions. A must have for the serious jazz guitarist.