Chord · Altered Dom.
C7♭9♭13 — C Altered ♭9♭13
C7♭9♭13 is the C altered ♭9♭13 chord. It is built on the root C with major 3rd (E), perfect 5th (G), minor 7th (B♭), minor 9th (D♭) and minor 13th (A♭) above it — the formula 1 3 5 ♭7 ♭9 ♭13, sounding the notes C E G B♭ D♭ A♭. On the piano it sits at C (octave 4) and above in the library's voicing; the same 6 notes in any octave are still C7♭9♭13.
- Root
- C
- Quality
- Altered ♭9♭13
- Formula
- 1 3 5 ♭7 ♭9 ♭13
- Notes
- C E G B♭ D♭ A♭
On the keyboard
The notes of C7♭9♭13
| Degree | Note | Interval from the root | Pitch |
|---|---|---|---|
| 1 | C | root | C4 |
| 3 | E | major 3rd | E4 |
| 5 | G | perfect 5th | G4 |
| ♭7 | B♭ | minor 7th | B♭4 |
| ♭9 | D♭ | minor 9th | D♭5 |
| ♭13 | A♭ | minor 13th | A♭5 |
Other altered dom. on C
Altered ♭9♭13 chords on every root
Part of the chord reference. See also the scales and the keys.