Four String Bass · Half-Step Down (E♭A♭D♭G♭)

Bø7♯9B Half-Diminished 7th Sharp 9th

A♯Root

C♯tone

Etone

G♯tone

C♯tone

Formula 7 · 2 · 4 · 6 · 2 · Notes A♯ · C♯ · E · G♯ · C♯

How to play it

Bø7♯9 fingering positions

Half-Step Down (E♭A♭D♭G♭), low E on the left. Each dot is colour-coded by note — the ringed dot is the root. Numbers below show the fret per string (x = muted).

B Half-Diminished 7th Sharp 9th guitar chord — 8th position (8 9 8 8) fretboard diagram in Half-Step Down (E♭A♭D♭G♭)

B Half-Diminished 7th Sharp 9th guitar chord — 20th position (20 21 20 20) fretboard diagram in Half-Step Down (E♭A♭D♭G♭)

Read it as tab

Bø7♯9 guitar tab

The same voicings in tablature — high e on top, low E on the bottom. Each fret number is colour-coded by note; the ringed number is the root, × means don’t play that string.

B Half-Diminished 7th Sharp 9th guitar tab — 8th position (8 9 8 8) in Half-Step Down (E♭A♭D♭G♭)

B Half-Diminished 7th Sharp 9th guitar tab — 20th position (20 21 20 20) in Half-Step Down (E♭A♭D♭G♭)

Sound

How Bø7♯9 sounds

Consonance

1/ 5

Brightness

DarkBright

Character

Moods & genres

Moods

thickdark

Genres

jazz

Theory

Notes & relationships

NotesA♯ · C♯ · E · G♯ · C♯

Formula (scale degrees)7 · 2 · 4 · 6 · 2

Explore

More ways to play B Half-Diminished 7th Sharp 9th

Browse the rest of the B chords in this tuning, or open Bø7♯9 in the app for every voicing.

Bø7♯9 in other tunings:

See & hear Bø7♯9 in Chordology

The app shows every voicing across guitar, piano, bass, banjo and ukulele — in any tuning, with a capo, and you can play every chord back. All offline.

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