Chord · Altered Dom.
B♭7♭5♭9 — B♭ Altered ♭5♭9
B♭7♭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 Bb (octave 3) and above in the library's voicing; the same 5 notes in any octave are still B♭7♭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 B♭7♭5♭9
| Degree | Note | Interval from the root | Pitch |
|---|---|---|---|
| 1 | B♭ | root | B♭3 |
| 3 | D | major 3rd | D4 |
| ♭5 | F♭ | diminished 5th | F♭4 |
| ♭7 | A♭ | minor 7th | A♭4 |
| ♭9 | C♭ | minor 9th | C♭5 |
Other altered dom. on B♭
Altered ♭5♭9 chords on every root
Part of the chord reference. See also the scales and the keys.