G

G Major — the foundation triad — stable, bright, and the reference point every other chord colour is measured against.

The keys
C4C5C6
G – B – D
What's inside G
NoteInterval from rootDegree
GRoot1
BMajor 3rd3
DPerfect 5th5
Inversions
PositionKeys (low → high)
Root positionG4 – B4 – D5
1st inversionB4 – D5 – G5
2nd inversionD5 – G5 – B5
A working voicing

Split the chord between two hands the way working players do — a solid shell low down, the colour tones up top:

HandKeys
Left (shell)G2 – D3
Right (colour)B4 – D5
Where G lives

As the I chord

G → C → D → G

The classic I–IV–V–I motion with this chord as home.

In a ii–V–I

Am7 → D7 → G

The strongest cadence in harmony, resolving onto this chord.

Put G under your fingers

Hear every voicing, see the keys light up, and drill it in the interactive Chord & Voicing Lab.

Open the Chord & Voicing Lab →
Major in every key
C C♯ D E♭ E F F♯ A♭ A B♭ B