03 — scales

Scales & the CAGED system

Fretboard patterns you can move up and down the neck without changing shape — only the fret you start on changes the key.

The one every player learns first

Minor pentatonic — box 1

Five notes, no half‑steps between adjacent scale tones on the same string, which makes it almost impossible to hit a "wrong" note. Shown here as A minor pentatonic (root on the 6th string, 5th fret) — slide the whole shape to any fret to get a different key.

Notes: A · C · D · E · G. Move this exact shape to fret 8 and it becomes C minor pentatonic; to fret 3, G minor pentatonic.

Adding the two missing notes

Natural minor

Add the 2nd and 6th degrees to the pentatonic box and you get the full seven‑note natural minor scale — same root, same position, more color and more places to land a phrase.

Notes: A · B · C · D · E · F · G — A natural minor, the relative minor of C major.

The pentatonic's rebellious cousin

Blues scale

The minor pentatonic plus one extra note — the flat 5th, the "blue note" — landing right between the 4th and 5th for the scale's signature tension.

Notes: A · C · D · D♯/E♭ (blue note) · E · G. The green dots mark the flat 5 — use it as a passing tone, not a landing note.

Five shapes, one neck

The CAGED system

Any major chord can be played using the shape of an open C, A, G, E, or D chord, moved up the neck and barred where the open strings used to be. The five shapes overlap and connect, covering the entire fretboard with chords you already know.

Why it matters

Once C‑A‑G‑E‑D shapes are barred and movable, they also map directly onto scale patterns — each shape has a matching scale box built around the same fingers, which is how players connect scale positions across the whole neck instead of staying stuck in one box.

Reference

The seven modes of the major scale

Same notes as the major scale, different starting point — each mode has its own character.

ModeStarts on degreeIn C majorCharacter
Ionian1C–D–E–F–G–A–Bmajor, resolved
Dorian2D–E–F–G–A–B–Cminor, bright 6th
Phrygian3E–F–G–A–B–C–Dminor, dark ♭2
Lydian4F–G–A–B–C–D–Emajor, dreamy ♯4
Mixolydian5G–A–B–C–D–E–Fmajor, bluesy ♭7
Aeolian6A–B–C–D–E–F–Gnatural minor
Locrian7B–C–D–E–F–G–Adiminished, unstable