Gadd9
G Added 9th — a plain triad plus the ninth — colour without the seventh, clean and contemporary.
The keys
G – B – D – A
What's inside Gadd9
| Note | Interval from root | Degree |
|---|---|---|
| G | Root | 1 |
| B | Major 3rd | 3 |
| D | Perfect 5th | 5 |
| A | Major 9th | 9 |
Inversions
| Position | Keys (low → high) |
|---|---|
| Root position | G4 – B4 – D5 – A5 |
| 1st inversion | B4 – D5 – A5 – G5 |
| 2nd inversion | D5 – A5 – G5 – B5 |
| 3rd inversion | A5 – G5 – B5 – D6 |
A working voicing
Split the chord between two hands the way working players do — a solid shell low down, the colour tones up top:
| Hand | Keys |
|---|---|
| Left (shell) | G2 – D3 |
| Right (colour) | B4 – A5 |
Where Gadd9 lives
As the I chord
Gadd9 → C → D → Gadd9
The classic I–IV–V–I motion with this chord as home.
In a ii–V–I
Am7 → D7 → Gadd9
The strongest cadence in harmony, resolving onto this chord.
Put Gadd9 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 →