For complete information on this topic, see Book III, Learning the Fingerboard, “Comprehensive Scales” pp. 236-241. All practical guitar keys are listed below: Major C major comprehensive scale G major comprehensive scale D major comprehensive scale A major comprehensive scale E major comprehensive scale F major comprehensive scale Minor A minor comprehensive scale E minor comprehensive scale B minor comprehensive scale D minor comprehensive scale Foundations–Book I Developments–Book II Learning the Fingerboard–Book III Guitar Harmony–Book IV