jazz guitar chords. Joe covers all the bases with two sections on chord forms and chord passages. Chords are divided into six categories: Major, Seventh, Augmented, Minor, Diminished, and Minor Seventh Flat Fifth, each showing substitutions and inversions that Joe would play when confronted with basic chord symbols. The chord passage section is divided into nine categories, including such topics as Major Sounds, Diminished Sounds, Augmented Sounds, Standard Patter Chord Substitutions, and other chord progression - related topics.