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CH·01 / G IONIAN
I

G Ionian

Happy, bright, resolved — built from G major
in
PARENT FAMILY · G MAJ

All 7 modes share the same parent scale (G major). G Ionian is the I mode.

#ModeDiatonic chordsMood
I G Ionian Gmaj7 – Am7 – Bm7 – Cmaj7 – D7 – Em7 – F♯m7♭5 Happy, bright, resolved
II A Dorian Am7 – Bm7 – Cmaj7 – D7 – Em7 – F♯m7♭5 – Gmaj7 Soulful, minor but with hope
III B Phrygian Bm7 – Cmaj7 – D7 – Em7 – F♯m7♭5 – Gmaj7 – Am7 Dark, tense, Spanish/flamenco
IV C Lydian Cmaj7 – D7 – Em7 – F♯m7♭5 – Gmaj7 – Am7 – Bm7 Dreamy, floating, ethereal
V D Mixolydian D7 – Em7 – F♯m7♭5 – Gmaj7 – Am7 – Bm7 – Cmaj7 Bluesy, dominant, rock
VI E Aeolian Em7 – F♯m7♭5 – Gmaj7 – Am7 – Bm7 – Cmaj7 – D7 Melancholic, natural minor
VII F♯ Locrian F♯m7♭5 – Gmaj7 – Am7 – Bm7 – Cmaj7 – D7 – Em7 Unstable, tense, dissonant
SCALE · 7 NOTES · 1 2 3 4 5 6 7
G A B C D E F♯
Formula: 1 2 3 4 5 6 7

The Ionian scale on G contains the notes G, A, B, C, D, E, F♯. The pentatonic subset is G, A, B, D, E.

Characteristic note: the major 7th gives it a bright, resolved sound.
DIATONIC 7ths · CHORD PAD
I
Gmaj7
II
Am7
III
Bm7
IV
Cmaj7
V
D7
VI
Em7
VII
F♯m7♭5
▸ Play G Ionian over Gmaj7 and D7 progressions.
FRETBOARD · STANDARD TUNING · 15F● LIVE
1 2 3 4 5 6 7 8 9 10 11 12 13 14 E B G D A E C F# A E B F# G D C G B F# A E C G D A B F# D A E B C G C E B F# D A C G D F# E B G D A E C F# A E B F#
CHARACTER · HAPPY, BRIGHT, RESOLVED
HAPPY, BRIGHT, RESOLVED

G Ionian is a major mode with a happy, bright, resolved character. It is the I mode of G major — it uses the same 7 notes as G Ionian but is rooted on G, which shifts the harmonic focus and creates a completely different sound. The tonic chord is Gmaj7.

Where to use G Ionian

Major key melodies, pop, folk, classical.

Famous examples

  • Happy Birthday
  • Let It Be
  • most pop songs
What makes it distinctive: the major 7th gives it a bright, resolved sound.