Chord · Altered Dom.
B7♭5♭9 — B Altered ♭5♭9
B7♭5♭9 is the B altered ♭5♭9 chord. It is built on the root B with major 3rd (D♯), diminished 5th (F), minor 7th (A) and minor 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♭5♭9.
- Root
- B
- Quality
- Altered ♭5♭9
- Formula
- 1 3 ♭5 ♭7 ♭9
- Notes
- B D♯ F A C
On the keyboard
The notes of B7♭5♭9
| Degree | Note | Interval from the root | Pitch |
|---|---|---|---|
| 1 | B | root | B3 |
| 3 | D♯ | major 3rd | D♯4 |
| ♭5 | F | diminished 5th | F4 |
| ♭7 | A | minor 7th | A4 |
| ♭9 | C | minor 9th | C5 |
Other altered dom. on B
Altered ♭5♭9 chords on every root
Part of the chord reference. See also the scales and the keys.