Finger Positions

A#m#5/B diagram
Root Note A#
Name A# minor augmented over B
Intervals 1P-3m-5A
Relative Minor Gm
Notes B, A#, C#, F#
Aliases A#m#5, A#-#5, A#m+

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

The A#m#5/B is a fundamental augmented 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 augmented over B is built using the 1P, 3m, 5A intervals. In the key of A# Major, this chord functions as the I chord.

Common Progressions

In music composition, the A#m#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
Minor Harmonic Minor Diminished Phrygian Locrian Vietnamese 1 Pelog Hirajoshi Malkos Raga Augmented Altered Locrian #2 Ultralocrian Augmented Heptatonic Balinese

* 15 scales found containing the notes B, A#, C#, F#.

Acoustic & Digital Analysis

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

MIDI Numbers 71, 70, 61, 66
Frequencies (Hz)

493.8833012561241, 466.1637615180899, 277.1826309768721, 369.9944227116344