Amaj9 Guitar Chord

The A major ninth is a major chord. Explore fingerings, progressions, and theory analysis below.

Finger Positions

Major
Amaj9 diagram
Root Note A
Name A major ninth
Intervals 1P-3M-5P-7M-9M
Relative Minor F#m
Notes A, C#, E, G#, B
Aliases Amaj9, AΔ9, A^9

Common Progressions Popular patterns using A

I-V-vi-IV

A → E → F#m → D

vi-IV-I-V

F#m → D → A → E

Diatonic Family (Triads)

A Bm C#m D E F#m G#dim

Diatonic Family (7ths)

Amaj7 Bm7 C#m7 Dmaj7 E7 F#m7 G#m7b5

Scale Compatibility

View All Scales
Major Bebop Lydian Harmonic Major Bebop Major Ichikosucho Messiaen's Mode #3 Chromatic

* 8 scales found containing the notes A, C#, E, G#, B.

Audio & MIDI Analysis

MIDI Numbers 69, 61, 64, 68, 71
Frequencies (Hz)

440, 277.1826309768721, 329.6275569128699, 415.3046975799451, 493.8833012561241