Guitar UpscaleA9 chord on guitar
The A dominant 9th chord, written A9, has 5 notes: A C# E G B.
As tab, thick low E string first: 522223, 575657. Numbers in the dots are fingers: 1 index, 2 middle, 3 ring, 4 little, T thumb. × marks a muted string and ○ an open one.
| Notes | A C# E G B |
|---|---|
| Formula | 1 3 5 b7 9 |
| Intervals | Root, Major 3rd, Perfect 5th, Minor 7th, 9th |
About the Dominant 9th Chord
A dominant 9th chord adds the ninth to a dominant 7th chord, the classic funk and blues chord. More about the Dominant 9th Chord.
Scales to play over A9
Each of these scales holds every note of the chord: