Chord · 13ths
C13♭9♯11 — C 13th ♭9 ♯11
C13♭9♯11 is the C 13th ♭9 ♯11 chord. It is built on the root C with major 3rd (E), perfect 5th (G), minor 7th (B♭), minor 9th (D♭), augmented 11th (F♯) and major 13th (A) above it — the formula 1 3 5 ♭7 ♭9 ♯11 13, sounding the notes C E G B♭ D♭ F♯ A. On the piano it sits at C (octave 4) and above in the library's voicing; the same 7 notes in any octave are still C13♭9♯11.
- Root
- C
- Quality
- 13th ♭9 ♯11
- Formula
- 1 3 5 ♭7 ♭9 ♯11 13
- Notes
- C E G B♭ D♭ F♯ A
On the keyboard
The notes of C13♭9♯11
| 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 |
| ♯11 | F♯ | augmented 11th | F♯5 |
| 13 | A | major 13th | A5 |
Other 13ths on C
13th ♭9 ♯11 chords on every root
Part of the chord reference. See also the scales and the keys.