Finger Positions

Root Note A#

Name A# dominant flat ninth over G

Intervals 1P-3M-5P-7m-9m

Relative Minor Gm

Notes G, A#, D, F, G#, B

Aliases A#7b9

How to play the A#7b9/G Chord

The A#7b9/G is a fundamental dominant chord in guitar music. To play this chord correctly, ensure your fingers are placed precisely on the frets indicated in the diagram above.

Music Theory Analysis

From a theoretical perspective, the A# dominant flat ninth over G is built using the 1P, 3M, 5P, 7m, 9m intervals. In the key of A# Major, this chord functions as the I chord.

Common Progressions

In music composition, the A#7b9/G chord is often used to create tension or resolution.

I-V-vi-IV

A# → F → Gm → D#

vi-IV-I-V

Gm → D# → A# → F

The Diatonic Family

Understanding the "family" of chords that belong to A# helps with transposition and ear training.

Triads

A# Cm Dm D# F Gm Adim

7ths

A#maj7 Cm7 Dm7 D#maj7 F7 Gm7 Am7b5

Scale Compatibility

View All Scales

Phrygian Dominant Flamenco Spanish Heptatonic Half-Whole Diminished Chromatic

* 5 scales found containing the notes G, A#, D, F, G#, B.

Acoustic & Digital Analysis

Digital footprint of the A#7b9/G chord for MIDI programming and synthesizer sound design.

MIDI Numbers 67, 70, 62, 65, 68, 71

Frequencies (Hz)

391.99543598174927, 466.1637615180899, 293.6647679174076, 349.2282314330039, 415.3046975799451, 493.8833012561241