Finger Positions

Root Note B

Name B minor double flat fifth over A#

Intervals 1P-3m-4P

Relative Minor G#m

Notes A#, B, D, E

Aliases

How to play the Bmbb5/A# Chord

The Bmbb5/A# is a fundamental unknown 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 B minor double flat fifth over A# is built using the 1P, 3m, 4P intervals. In the key of B Major, this chord functions as the I chord.

Common Progressions

In music composition, the Bmbb5/A# chord is often used to create tension or resolution.

I-V-vi-IV

B → F# → G#m → E

vi-IV-I-V

G#m → E → B → F#

The Diatonic Family

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

Triads

B C#m D#m E F# G#m A#dim

7ths

Bmaj7 C#m7 D#m7 Emaj7 F#7 G#m7 A#m7b5

Scale Compatibility

View All Scales

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

Acoustic & Digital Analysis

Digital footprint of the Bmbb5/A# chord for MIDI programming and synthesizer sound design.

MIDI Numbers 70, 71, 62, 64

Frequencies (Hz)

466.1637615180899, 493.8833012561241, 293.6647679174076, 329.6275569128699