Guitar arpeggio
A Major 9 Guitar Arpeggio
A Major 9 is a five-note arpeggio built from A, C#, E, G#, and B. It is also commonly called A Major Ninth, and AMaj9. Use it to study chord tones, interval formulas, and guitar fretboard positions.
- Chord tones
- AC#EG#B
- Formula
- 1 3 5 7 9
- Semitones
- 0 4 7 11 14
- Chord symbols
- Amaj9AM9
- Also called
- A Major NinthAMaj9
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 major 9 chord tones across standard tuning.
This same arpeggio shape is also commonly called A Major Ninth or AMaj9.
Fretboard diagram
Open this arpeggio in the fretboard tool
Start with A Major 9 loaded, then adjust tuning, labels, colors, fret count, and orientation.
Open in interactive fretboard