THE BOOK
The Guitar Decoded
Learn how music theory has been on the fretboard all along.
Stop memorizing shapes. This book shows how intervals, chords, and scales are geometrically embeded in the neck of your guitar — so the whole fretboard finally makes sense.
- See the fretboard in a new, visual way
- Connect music theory directly to your guitar
- Improve improvisation, chord choices & songwriting
- For beginners, players & instructors
For Every Player and Instructor
New Players
Knowing why the patterns you ‘re about to learn work so seamlessly together will propel you to true mastery of the world’s most popular musical instrument.
Intermediate Players
You know the shapes but can’t explain why they work. Connect the dots between the patterns you’ve memorized and the theory behind them.
Theory Curious
You have studied theory in the abstract, but the guitar neck remains a mystery. Translate the abstract into fretboard geometry from first principles.
Pattern Explorers
You’ know about CAGED and “boxed” scale positions. Now see how scales are built, how they link, and what what CAGED shapes really are.
The Main Topics
01
Acoustics & Harmonics
02
Origins of the Scales
03
Chord Formation
04
Chords & Scales Intertwined
05
CAGED System Deep Dive
06
Navigate the Fretboard
Take a Look!
Crisp text and uniquely instructive and useful graphics combine the core elements of music theory to illustrate the connected nature of the guitar: science to harmonics, harmonics to anatomy, scale to chords, and patterns to music. For example, the matter of scale “boxes” and “positions” is confusing and often explained incorrectly. On pages 60-62 the topic is covering in terms of underlying theory, the correct structure is explained, and the graphics bring the matter to life.
About the Author
“What I wish someone had given me with my first guitar.”

A lifelong guitar enthusiast, after a few lessons, young Johnny Graham was left to unravel the mysteries of the fretboard entirely on his own. Years later, his teenage son, Stevie, was student of classical guitar and music theory. One evening Johnny watched Stevie perfecting a complex arpeggio. He asked how such intricate patterns were created. Stevie’s answer stayed with Johnny forever: “It’s a simple matter of connecting the scale notes that surround a simple chord.” That “not so simple” answer sparked a creative journey.
Johnny created this graphic of whole notes connected across the neck. He filed it away as family and the Air Force took priority, rediscovering it after retiring and with the time to explore Stevie’s answer.
To Johnny, it was more like decoding a hidden language than learning the guitar! As he connected core elements of practical music theory with the physical design of the fretboard, he realized that understanding why the guitar works the way it does makes learning how to play far less intimidating.
That insight led to The Guitar Decoded. Strugling with scattered research notes, he undertook to make some order of what he had learned. He took a building block approach to assembled essential concepts every guitar instructor and student should know. He explained how they fit together, presenting them in a clear, highly visual, easy-to-understand way.
His hope is for every guitarist to see the guitar with the clarity and understanding he wishes he had acquired decades ago.
Posted on Amazon Logan MastenVerified Great beginners guide Excellent beginners guide to learning the guitar. It has examples and diagrams that are easy to understand without getting overwhelmed and learning more exciting.Posted on Amazon Shaniece MurrayVerified Awesome This is a refreshing and practical guide that makes the fretboard feel approachable and exciting. The author's clear explanations and creative exercises help unlock scales and improvisation without overly technical wording. This book is perfect for guitarists who want to boost their confidence, spark creativity, and enjoy playing more freely.Posted on Amazon SynthiaVerified Guitar Decoded This book does an excellent job of making the guitar fretboard feel logical and connected instead of overwhelming and confusing. The clear explanations of chords, scales, intervals, CAGED, and the Circle of Fifths make it much easier to understand how everything works together. A fantastic resource for guitarists who want to move beyond memorizing shapes and truly understand the instrument.Posted on Amazon mark w felhoferVerified reading this will instill a desire to research deeper in the matter at hand this is a "Why" the guitar works read. Illustrations of notes and/or chords can come later. Provides a foundation with requisite information to support the intent of the author. if you can actually read it all the way to the end, you just may be able to play guitar well.Posted on Amazon Michelle HuntVerified Helps Mr. Graham helps you underatand how notes and chords operate on you guitar in a logical musical world.
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The Guitar DECODED is available from several sources.
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companion materials.
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Order directly from Johnny’s Bookstore.
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- Hard Cover ISBN: 9798256224974
- Paperback ISBM: 9798256224516
- Also available from AMAZON or Barnes & Noble
The guitar isn’t difficult because it’s complicated. It’s only difficult if you don’t understand what makes it work.
THE GUITAR DECODED changes that!