A Scale-Mode-Chord Matrix Containing 252 Musical Scales Illustrating Structure, Relationships and Applications Includes Chord Harmonization and an Index of Traditional Names FOR ALL INSTRUMENTS - INCLUDES GUITAR FRETBOARD MAPS The Matrix Contains 4 Layers of Information: 1) Scales - interval recipes for 252 unique musical scales 2) Steps - graphic illustration of the step pattern of each scale 3) Modes - graphic illustration of the modal relationships between the scales 4) Chords - all available diatonic chord tones for each step of every scale