Guitar arpeggio
A Dominant 9 Guitar Arpeggio
A Dominant 9 is a five-note arpeggio built from A, C#, E, G, and B. It is also commonly called A Dominant Ninth, and A9. Use it to study chord tones, interval formulas, and guitar fretboard positions.
- Chord tones
- AC#EGB
- Formula
- 1 3 5 b7 9
- Semitones
- 0 4 7 10 14
- Chord symbols
- A9
- Also called
- A Dominant NinthA9
How to read this arpeggio
The chord tones are shown as pitch classes first. In the fretboard tool, square markers represent A root notes, while circular markers represent the remaining tones in the arpeggio.
Use the interactive fretboard to locate the A root notes and connect the remaining dominant 9 chord tones across standard tuning.
This same arpeggio shape is also commonly called A Dominant Ninth or A9.
Fretboard diagram
Open this arpeggio in the fretboard tool
Start with A Dominant 9 loaded, then adjust tuning, labels, colors, fret count, and orientation.
Open in interactive fretboard