Understanding how chords move in fourths is essential to understanding chord progressions. An excellent way to display that is with what is commonly called the “Cycle Progression”. Essentially we work through each key by playing the ii v I IV in a major key followed by the relative minor. The is the foundation for many songs including the jazz standard “Autumn Leaves”. Once you grasp these basic 7th chords you can add extended harmonies, altered chords and ti-tone subs.
