Root on E string
A9 chord tones around the E-string root.
Bass chord companion
A9 Chord
Learn the A9 chord on bass with chord tones, intervals, and interactive fretboard shapes.
1A3C#5Eb7G9B
Bass chord-tone boxes
Bass lines usually imply this chord with arpeggios and target tones. Start with root-on-E and root-on-A boxes.
Root on A string
A9 chord tones around the A-string root.
Full fretboard map
Every A9 Chord chord tone across the neck, with roots highlighted for quick orientation.
Common progressions using A9
Try these progressions to hear the chord in context instead of treating it as an isolated shape.
V to I resolution
Use the dominant sound to pull strongly into a stable major tonic.
Minor-key dominant pull
The same dominant root can resolve into a minor tonic for a darker cadence.
Turnaround color
Place the dominant at the end of a turnaround so the next phrase has forward motion.
Chord Tones
| Degree | Interval | Note |
|---|---|---|
| 1 | R | A |
| 3 | 3 | C# |
| 5 | 5 | E |
| b7 | b7 | G |
| 9 | 2 | B |
Compatible Scales
Formula
R – 3 – 5 – b7 – 2