Finger Positions

Root Note A#

Name A# minor major seventh sharp fifth over B

Intervals 1P-3M-5A-7M

Relative Minor Gm

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

Aliases

How to play the A#mmaj7#5/B Chord

The A#mmaj7#5/B is a fundamental major 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# minor major seventh sharp fifth over B is built using the 1P, 3M, 5A, 7M intervals. In the key of A# Major, this chord functions as the I chord.

Common Progressions

In music composition, the A#mmaj7#5/B 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

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

Acoustic & Digital Analysis

Digital footprint of the A#mmaj7#5/B chord for MIDI programming and synthesizer sound design.

MIDI Numbers 71, 70, 62, 66, 69

Frequencies (Hz)

493.8833012561241, 466.1637615180899, 293.6647679174076, 369.9944227116344, 440