Learn Guitar › Track 3: Intermediate

Full Fretboard System Integration

System visualizers, musical analysis and deep-dive technical articles.

The CAGED System Unlocked

CAGED maps the whole neck onto five familiar open chord shapes: C, A, G, E, D. Each shape interlocks with the next by sharing notes; move through them in order and you can play the same chord anywhere on the neck.

Every C major chord tone on the neck

Pink = root (C), purple = 3 (E), amber = 5 (G). All five shapes are hidden in these dots.

The five shapes, in order

C shape — C major
A shape — C major
G shape — C major
E shape — C major
D shape — C major
  • The shapes climb in the order C → A → G → E → D → C, repeating from fret 12.
  • Around every chord shape sits a pentatonic box and an arpeggio: the chord tones (R-3-5) are the skeleton of the pentatonic. Compare them in the Scale & Chord Explorer.
  • Practice: play one chord (e.g. G) in all five shapes, then play I–IV–V staying in one area.

Triad Inversions

Reorder a triad's notes and you get an inversion: the same chord with a different colour, in a different part of the neck.

InversionLowest noteIn C major
Root positionRC – E – G
1st inversion3E – G – C
2nd inversion5G – C – E
Strings 1-2-3: the three inversions left to right.
Strings 2-3-4: the three inversions left to right.
Strings 3-4-5: the three inversions left to right.

Play a progression (e.g. C – Am – F – G) using only triads on strings 1-2-3 without leaving a 4–5 fret area. Choosing the nearest inversion is the foundation of voice leading.

3-Note-Per-String (3NPS) System

In the 3NPS system every string gets exactly three notes. The regular pattern suits alternate picking and legato at speed; it's the standard map of modern rock and fusion.

G major (Ionian), pattern 1 — starts on G on string 6.
Pattern 2 — starts on A (same notes: A Dorian).

There are 7 patterns, one starting on each note of the major scale, and each is the shape of a mode:

Pattern / ModeStarting fret on string 6Open in Explorer
G Ionian3→
A Dorian5→
B Phrygian7→
C Lydian8→
D Mixolydian10→
E Aeolian12→
F♯ Locrian14→