Finger Positions

Root Note A#

Name A# eleventh over A

Intervals 1P-5P-7m-9M-11P

Relative Minor Gm

Notes A, A#, F, G#, C, D#

Aliases A#11

How to play the A#11/A Chord

The A#11/A 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# eleventh over A is built using the 1P, 5P, 7m, 9M, 11P intervals. In the key of A# Major, this chord functions as the I chord.

Common Progressions

In music composition, the A#11/A 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

Minor Bebop Dorian Mixolydian Piongio Mixolydian B6 Bebop Minor Minor Bebop Composite Blues Chromatic

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

Acoustic & Digital Analysis

Digital footprint of the A#11/A chord for MIDI programming and synthesizer sound design.

MIDI Numbers 69, 70, 65, 68, 60, 63

Frequencies (Hz)

440, 466.1637615180899, 349.2282314330039, 415.3046975799451, 261.6255653005986, 311.1269837220809