CH·01 / G IONIAN
I
G Ionian
Happy, bright, resolved — built from G major
PARENT FAMILY · G MAJ
All 7 modes share the same parent scale (G major). G Ionian is the I mode.
| # | Mode | Diatonic chords | Mood |
|---|---|---|---|
| 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
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.
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