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CH·01 / G♯ IONIAN
I

G♯ Ionian

Happy, bright, resolved — built from G♯ major
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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 G♯maj7 – A♯m7 – Cm7 – C♯maj7 – D♯7 – Fm7 – Gm7♭5 Happy, bright, resolved
II A♯ Dorian A♯m7 – Cm7 – C♯maj7 – D♯7 – Fm7 – Gm7♭5 – G♯maj7 Soulful, minor but with hope
III C Phrygian Cm7 – C♯maj7 – D♯7 – Fm7 – Gm7♭5 – G♯maj7 – A♯m7 Dark, tense, Spanish/flamenco
IV C♯ Lydian C♯maj7 – D♯7 – Fm7 – Gm7♭5 – G♯maj7 – A♯m7 – Cm7 Dreamy, floating, ethereal
V D♯ Mixolydian D♯7 – Fm7 – Gm7♭5 – G♯maj7 – A♯m7 – Cm7 – C♯maj7 Bluesy, dominant, rock
VI F Aeolian Fm7 – Gm7♭5 – A♭maj7 – B♭m7 – Cm7 – D♭maj7 – E♭7 Melancholic, natural minor
VII G Locrian Gm7♭5 – G♯maj7 – A♯m7 – Cm7 – C♯maj7 – D♯7 – Fm7 Unstable, tense, dissonant
SCALE · 7 NOTES · 1 2 3 4 5 6 7
G♯ A♯ C C♯ D♯ F G
Formula: 1 2 3 4 5 6 7

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

Characteristic note: the major 7th gives it a bright, resolved sound.
DIATONIC 7ths · CHORD PAD
I
G♯maj7
II
A♯m7
III
Cm7
IV
C♯maj7
V
D♯7
VI
Fm7
VII
Gm7♭5
▸ Play G♯ Ionian over G♯maj7 and D♯7 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 F C G# D# A# F C# G A# F C G G# D# C# G# C G A# F C# G# D# A# C G D# A# F C C# G# C# F C G D# A# C# G# D# G F C G# D# A# F C#
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 G♯maj7.

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.