B7♯9
B7♯9 is the b dominant 7th sharp 9 chord, spelled B – D♯ – F♯ – A – D. major and minor thirds colliding in one chord — gritty, electric, built for emphatic moments.
The keys
B – D♯ – F♯ – A – D
Practise this chord
Plug in your MIDI keyboard and let Coach Tshepho drill you on B7♯9 — it plays the chord, names any wrong notes as you play, and moves you on when you nail it.
Create your free account →What's inside B7♯9
| Note | Interval from root | Degree |
|---|---|---|
| B | Root | 1 |
| D♯ | Major 3rd | 3 |
| F♯ | Perfect 5th | 5 |
| A | Minor 7th | b7 |
| D (spelled C♯♯) | Sharp 9th | #9 |
A working voicing
Split the chord between two hands the way working players do — a solid shell low down, the colour tones up top:
| Hand | Keys |
|---|---|
| Left (shell) | B2 – A3 |
| Right (colour) | E♭5 – D6 |
Where B7♯9 lives
Hard resolution
B7♯9 → Em9
Altered dominants resolve with maximum drama — especially into minor.
Chromatic approach
G♭m7 → B7♯9 → E
The alteration sharpens the pull of the standard two-five.
Put B7♯9 under your fingers
Hear every voicing, see the keys light up, and drill it in the interactive Chord & Voicing Lab.
Open the Chord & Voicing Lab →More B chords
B
Bm
Bdim
Baug
Bsus2
Bsus4
B6
Bm6
B7
Bmaj7
Bm7
Bm7♭5
Bdim7
Bm(maj7)
B9
Bmaj9
Bm9
Badd9
B6/9
Bm11
B13
B7♭9
B7♯5Play it over a groove
Free worship grooves & loops →