Master the Fretboard.
From Anatomy to Advanced Modes.
Unlock the mechanics of music theory tailored specifically for acoustic and electric guitarists. Understand how chords are constructed, visualize fretboard geometry, navigate scales, master the CAGED system.
Guitar Anatomy (Acoustic vs. Electric)
Understand the structural physical components that produce and shape pitch
Headstock & Tuning Pegs
Holds the machine heads used to adjust string tension, altering string pitch to achieve standard tuning.
Nut & Frets
The nut anchors strings at the headstock. Metal fret wires divide the neck into semitones (half steps).
Pickups vs Soundhole
Electric guitars use magnetic pickups (Single-coil or Humbuckers) to transduce string vibration into electrical signals; acoustics use a hollow chamber & soundhole for natural resonance.
Standard Tuning EADGBE (Eddie Ate Dynamite, Good Bye Eddie)
The Musical Alphabet & Chromatic Scale
The 12 notes of Western music, semitones, and the E-F & B-C half-step rule
The 12-Tone System
Music uses 7 natural notes (A, B, C, D, E, F, G) plus 5 sharps (#) / flats (♭), totaling 12 chromatic pitches before repeating an octave higher.
Every note has a sharp/flat between it EXCEPT E-F and B-C. E to F is 1 half step (1 fret). B to C is 1 half step (1 fret).
The Chromatic Scale Strip
Click any pitch to hear tone and highlight natural vs sharp/flat steps
Chord Structure & Triad Formulas
How stack intervals (1st, 3rd, 5th, 7th) create every chord type
Happy & Bright
Root + Major 3rd (4 semitones) + Perfect 5th (7 semitones).
Sad & Somber
Root + Minor 3rd (3 semitones) + Perfect 5th (7 semitones).
Tense & Unstable
Root + Minor 3rd (3 semitones) + Diminished 5th (6 semitones / Tritone).
Bluesy & Driving
Major triad plus a flattened 7th degree. Creates tension resolving to I.
Open Chords & The CAGED System
Unlock the entire neck using the 5 fundamental major chord shapes (C - A - G - E - D)
What is CAGED?
Any major chord on the guitar can be played in 5 different positions across the neck using the shapes of open C, A, G, E, and D.
As you move up the neck, your index finger acts as a moveable nut (barre chord), connecting the shapes like interlocking puzzle pieces.
C Shape (Open Position)
Root note resides on the 5th string (A string). Strummed from 5th string down.
Keys, Harmonized Scales & Circle of Fifths
Major scale formula (W-W-H-W-W-W-H) and Roman Numeral chord progressions
Harmonized Major Scale Chords
Building triads on each degree of a Major Scale yields a fixed pattern of chord qualities:
Famous Progression Formulas:
The Circle of Fifths
Clockwise adds 1 Sharp (#), Counter-clockwise adds 1 Flat (♭)
Click any note around the circle to inspect its harmonized key!
Scales (Major, Minor, Pentatonic & Blues)
The foundational soloing frameworks used across rock, blues, jazz, and pop
Major Scale (Ionian)
Formula: W - W - H - W - W - W - H
The mother of all Western scales. Bright, uplifting sound.
Natural Minor (Aeolian)
Formula: W - H - W - W - H - W - W
Degree intervals: 1 - 2 - ♭3 - 4 - 5 - ♭6 - ♭7. Somber and emotional.
Minor Pentatonic
Formula: 1 - ♭3 - 4 - 5 - ♭7
Removes tension notes (2nd & ♭6th). Standard soloing workhorse.
The Blues Scale
Formula: 1 - ♭3 - 4 - ♭5 - 5 - ♭7
Adds the diminished 5th "Blue Note" for gritty chromatic tension.
The 7 Modes of the Major Scale
Same notes, different starting positions — unleashing unique modal flavors
Arpeggios & Sweep Picking Fundamentals
Outline chords note-by-note across strings for fluid lead lines
What is an Arpeggio?
An arpeggio is a "broken chord" where triad notes (1 - 3 - 5) are played sequentially instead of struck simultaneously.
Major vs. Minor Triad Sweeps Interactive Audio Demonstration
Notes: A - C# - E - A
Notes: A - C - E - A
Theory Arena & Quiz
Test your mastery of guitar formulas, fretboard intervals, and chord structures