Learn Guitar › Track 3: Intermediate

Harmonic Expansion & Modes

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

The 7 Diatonic Modes

Modes are the major scale started from different notes. What really matters is comparing each mode from the same root (parallel): then each mode's characteristic note jumps out. The table gives every mode from C; press ▶ and listen for the characteristic note.

ModeFormulaCharacteristicTypical chordCharacter / use
C Ionian1 2 3 4 5 6 77Cmaj7Bright, resolved; pop and classical melodies
C Dorian1 2 ♭3 4 5 6 ♭76Cm7Minor but hopeful; funk, jazz, Santana
C Phrygian1 ♭2 ♭3 4 5 ♭6 ♭7♭2CmDark, Spanish/Middle-Eastern; metal riffs
C Lydian1 2 3 ♯4 5 6 7♯4Cmaj7♯11Dreamy, floating; film scores
C Mixolydian1 2 3 4 5 6 ♭7♭7C7Major but gritty; blues-rock, country
C Aeolian1 2 ♭3 4 5 ♭6 ♭7♭6Cm7Sad natural minor; rock ballads
C Locrian1 ♭2 ♭3 4 ♭5 ♭6 ♭7♭5Cm7♭5Unstable, tense; over m7♭5, rarely a home key

How do you make a mode "sound"?

  • Keep the root as a steady bass note or drone (e.g. open string 5, A).
  • Lean on the characteristic note in your melody: the 6 in Dorian, ♯4 in Lydian, ♭7 in Mixolydian.
  • Choose chords to match: for A Dorian use Am7 – D (the IV becomes major!).
A Dorian vamp: Am – D. The major IV chord carries Dorian's natural 6.

Extended Chords

Keep stacking thirds on a triad and you get 7th, 9th, 11th and 13th chords. On guitar the 5th or even the root is often dropped while the colour notes stay.

ChordFormulaListen
Cmaj71 3 5 7
Cm71 ♭3 5 ♭7
C71 3 5 ♭7
Cm7♭51 ♭3 ♭5 ♭7
C91 3 5 ♭7 9
Cmaj91 3 5 7 9
Cm91 ♭3 5 ♭7 9
C111 (3) 5 ♭7 9 11
C131 3 (5) ♭7 9 13
Cmaj7
Fmaj7
Am7
Em7
Dm7
G7
C7
C9
E9

9, 11 and 13 are really the 2, 4 and 6 an octave up. The difference: an "add9" chord has no ♭7, a "9" chord does. In 11th chords the major 3rd is usually left out because it clashes with the 11.