Guitar Theory Studio
Mode

G Ionian

The G Ionian mode — G A B C D E F# — shown across the guitar neck.

G Ionian on the guitar fretboard13578910121415eBGDAEEF#GABCDEF#GBCDEF#GABCDGABCDEF#GADEF#GABCDEABCDEF#GABCEF#GABCDEF#G

Tap any note on the neck.

Swipe the neck sideways to see the higher frets.

G Ionian is the major scale — same seven notes, same order. The mode name describes which chord you treat as home, not a different set of notes.

What is G Ionian?

G Ionian is the seven notes G A B C D E F# — the notes of G major started from its 1st degree, G. Same seven notes as the parent, but with G as home, so the intervals and the sound are different.

G
1
root
A
2
major 2nd
B
3
major 3rd
C
4
perfect 4th
D
5
perfect 5th
E
6
major 6th
F#
7
major 7th

G Ionian vs G major

They are the same seven notes in the same order. “Ionian” is the mode name for the major scale — it says which chord you treat as home, not that any note changed.

Chords in G Ionian

Stack the mode in thirds and each degree becomes a chord. The home chord is G; the rest are the chords of G major, since the notes are the same — what changes is which one the music rests on. Vamp between G and C and the mode is unmistakable.

G
G chord shapeDGBGBG
1
Am
Am chord shape2frACEAEA
2
Bm
Bm chord shape4frBDF#BF#B
3
C
C chord shape5frCEGCEC
4
D
D chord shape7frDF#ADF#D
5
Em
Em chord shapeEGBEBE
6
F#dim
F#dim chord shape1frF#CF#ACF#
7

All the chords in G major, with shapes and numerals →

G Ionian on the guitar neck

Because G Ionian is G major from its 1st note, its natural fingering is position 1 of the seven three-notes-per-string shapes of G major — the shape whose lowest note is G. Learn that shape with G as home — start and end on it, over a drone on G or the vamp above — and you have the mode under your fingers. The other six positions are the fingerings for the other six modes of the same key.

How to practice G Ionian on guitar

  1. Loop position 1 of G major at 60 BPM, starting and ending on G so your ear hears G as home rather than G.
  2. Hold a G chord (or record one) and play the shape over it. Listen for the chord tones landing on the beat.
  3. Hear it harmonized in 3rds on the Fretboard: press Play and every note sounds with its partner while the neck lights up.
Notes
G   A   B   C   D   E   F#
Intervals
1   2   3   4   5   6   7
Parent scale
G Major
Degree of parent
1
Open G Ionian in the tool →

Ionian is the major scale: the tool draws G Ionian, the same notes as G major.

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