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All about Music Theory: A Fun and Simple Guide to Understanding Music

Guitar: Fretboard Mastery: An In-Depth Guide to Playing Guitar with Ease, Including Note Memorization, Music Theory for Beginners, Chords, Scales and Technical Exercises

Guitar Scales: A Practical Guide to Understanding the Guitar Fretboard

Basic Music Theory, 4th ed.: How to Read, Write, and Understand Written Music