A7b9/B Guitar Chord

The A dominant flat ninth over B is a dominant chord. Explore fingerings, progressions, and theory analysis below.

Finger Positions

Dominant
A7b9/B diagram
Root Note A
Name A dominant flat ninth over B
Intervals 1P-3M-5P-7m-9m
Relative Minor F#m
Notes B, A, C#, E, G, Bb
Aliases A7b9

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
Phrygian Dominant Flamenco Spanish Heptatonic Half-Whole Diminished Chromatic

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

Audio & MIDI Analysis

MIDI Numbers 71, 69, 61, 64, 67, 70
Frequencies (Hz)

493.8833012561241, 440, 277.1826309768721, 329.6275569128699, 391.99543598174927, 466.1637615180899