Finger Positions

Root Note A#

Name A# sixth added ninth over D

Intervals 1P-3M-5P-6M-9M

Relative Minor Gm

Notes A#, D, F, G, C

Aliases A#6add9, A#6/9, A#69, A#M69

How to play the A#6add9/D Chord

The A#6add9/D 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# sixth added ninth over D is built using the 1P, 3M, 5P, 6M, 9M intervals. In the key of A# Major, this chord functions as the I chord.

Common Progressions

In music composition, the A#6add9/D 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

Major Major Blues Bebop Lydian Mixolydian Lydian Dominant Bebop Minor Bebop Major Ichikosucho Composite Blues Chromatic

* 11 scales found containing the notes A#, D, F, G, C.

Acoustic & Digital Analysis

Digital footprint of the A#6add9/D chord for MIDI programming and synthesizer sound design.

MIDI Numbers 70, 62, 65, 67, 60

Frequencies (Hz)

466.1637615180899, 293.6647679174076, 349.2282314330039, 391.99543598174927, 261.6255653005986