Chord · Altered Dom.
B♭7♯9♭13 — B♭ Altered ♯9♭13
B♭7♯9♭13 is the B♭ altered ♯9♭13 chord. It is built on the root B♭ with major 3rd (D), perfect 5th (F), minor 7th (A♭), augmented 9th (C♯) and minor 13th (G♭) above it — the formula 1 3 5 ♭7 ♯9 ♭13, sounding the notes B♭ D F A♭ C♯ G♭. On the piano it sits at Bb (octave 3) and above in the library's voicing; the same 6 notes in any octave are still B♭7♯9♭13.
- Root
- B♭
- Quality
- Altered ♯9♭13
- Formula
- 1 3 5 ♭7 ♯9 ♭13
- Notes
- B♭ D F A♭ C♯ G♭
On the keyboard
The notes of B♭7♯9♭13
| Degree | Note | Interval from the root | Pitch |
|---|---|---|---|
| 1 | B♭ | root | B♭3 |
| 3 | D | major 3rd | D4 |
| 5 | F | perfect 5th | F4 |
| ♭7 | A♭ | minor 7th | A♭4 |
| ♯9 | C♯ | augmented 9th | C♯5 |
| ♭13 | G♭ | minor 13th | G♭5 |
Other altered dom. on B♭
Altered ♯9♭13 chords on every root
Part of the chord reference. See also the scales and the keys.