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