Chord · 9ths
C♯m9 — C♯ Minor 9th
C♯m9 is the C♯ minor 9th chord. It is built on the root C♯ with minor 3rd (E), perfect 5th (G♯), minor 7th (B) and major 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 C♯m9.
- Root
- C♯
- Quality
- Minor 9th
- Formula
- 1 ♭3 5 ♭7 9
- Notes
- C♯ E G♯ B D♯
On the keyboard
The notes of C♯m9
| Degree | Note | Interval from the root | Pitch |
|---|---|---|---|
| 1 | C♯ | root | C♯4 |
| ♭3 | E | minor 3rd | E4 |
| 5 | G♯ | perfect 5th | G♯4 |
| ♭7 | B | minor 7th | B4 |
| 9 | D♯ | major 9th | D♯5 |
Other 9ths on C♯
Minor 9th chords on every root
Part of the chord reference. See also the scales and the keys.