G9

G Dominant 9th — a dominant seventh widened with the ninth — fuller, funkier movement toward the resolution.

The keys
C4C5C6
G – B – D – F – A
What's inside G9
NoteInterval from rootDegree
GRoot1
BMajor 3rd3
DPerfect 5th5
FMinor 7thb7
AMajor 9th9
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 – F3
Right (colour)B4 – A5
Where G9 lives

As the I chord

G9 → C → D → G9

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

In a ii–V–I

Am7 → D7 → G9

The strongest cadence in harmony, resolving onto this chord.

Put G9 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 →
Dominant 9th in every key
C9 C♯9 D9 E♭9 E9 F9 F♯9 A♭9 A9 B♭9 B9