Chord · Altered Dom.
B7♯9 — B Dominant 7th ♯9
B7♯9 is the B dominant 7th ♯9 chord. It is built on the root B with major 3rd (D♯), perfect 5th (F♯), minor 7th (A) and augmented 9th (C𝄪) above it — the formula 1 3 5 ♭7 ♯9, sounding the notes B D♯ F♯ A C𝄪. On the piano it sits at B (octave 3) and above in the library's voicing; the same 5 notes in any octave are still B7♯9.
- Root
- B
- Quality
- Dominant 7th ♯9
- Formula
- 1 3 5 ♭7 ♯9
- Notes
- B D♯ F♯ A C𝄪
On the keyboard
The notes of B7♯9
| Degree | Note | Interval from the root | Pitch |
|---|---|---|---|
| 1 | B | root | B3 |
| 3 | D♯ | major 3rd | D♯4 |
| 5 | F♯ | perfect 5th | F♯4 |
| ♭7 | A | minor 7th | A4 |
| ♯9 | C𝄪 | augmented 9th | C♯♯5 |
Other altered dom. on B
Dominant 7th ♯9 chords on every root
Part of the chord reference. See also the scales and the keys.