(Guitar Educational). Scale Chord Relationships teaches players how to determine which scales to play with which chords, so guitarists will never have to fear chord changes again! This book/audio pack explains how to: recognize keys; analyze chord progressions; use the modes; play over nondiatonic harmony; use harmonic and melodic minor scales; use symmetrical scales such as chromatic, whole-tone and diminished scales; incorporate exotic scales such as Hungarian major and Gypsy minor; and much more!