C Ionian

Happy, bright, resolved — built from C major

PARENT FAMILY · C MAJ

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

#	Mode	Diatonic chords	Mood
I	C Ionian	Cmaj7 – Dm7 – Em7 – Fmaj7 – G7 – Am7 – Bm7♭5	Happy, bright, resolved
II	D Dorian	Dm7 – Em7 – Fmaj7 – G7 – Am7 – Bm7♭5 – Cmaj7	Soulful, minor but with hope
III	E Phrygian	Em7 – Fmaj7 – G7 – Am7 – Bm7♭5 – Cmaj7 – Dm7	Dark, tense, Spanish/flamenco
IV	F Lydian	Fmaj7 – G7 – Am7 – Bm7♭5 – Cmaj7 – Dm7 – Em7	Dreamy, floating, ethereal
V	G Mixolydian	G7 – Am7 – Bm7♭5 – Cmaj7 – Dm7 – Em7 – Fmaj7	Bluesy, dominant, rock
VI	A Aeolian	Am7 – Bm7♭5 – Cmaj7 – Dm7 – Em7 – Fmaj7 – G7	Melancholic, natural minor
VII	B Locrian	Bm7♭5 – Cmaj7 – Dm7 – Em7 – Fmaj7 – G7 – Am7	Unstable, tense, dissonant

SCALE · 7 NOTES · 1 2 3 4 5 6 7

C D E F G A B

Formula: 1 2 3 4 5 6 7

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

Characteristic note: the major 7th gives it a bright, resolved sound.

DIATONIC 7ths · CHORD PAD

I

Cmaj7

II

Dm7

III

Em7

IV

Fmaj7

V

G7

VI

Am7

VII

Bm7♭5

▸ Play C Ionian over Cmaj7 and G7 progressions.

FRETBOARD · STANDARD TUNING · 15F● LIVE

CHARACTER · HAPPY, BRIGHT, RESOLVED

HAPPY, BRIGHT, RESOLVED

C Ionian is a major mode with a happy, bright, resolved character. It is the I mode of C major — it uses the same 7 notes as C Ionian but is rooted on C, which shifts the harmonic focus and creates a completely different sound. The tonic chord is Cmaj7.

Where to use C 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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