Dominant family
C dominant ninth chord
C9C dominant ninth
Piano root position
- Root
- 3
- 5
- ♭7
- 9
Guitar standard tuning
Fret 2
No barre: each note has its own finger.
Finger: 1 index, 2 middle, 3 ring, 4 little
Notation treble clef
Intervals
12 semitones- C1
- ♭2
- D9
- ♭3
- E3
- 4
- ♭5
- G5
- ♯5
- 6
- B♭♭7
- 7
- C Root
- E Major 3rd
- G Perfect 5th
- B♭ Minor 7th
- D Major 9th
About this chord
What is a C dominant ninth chord?
C9 is built from 5 notes: C (the root), E (the 3), G (the 5), B♭ (the ♭7), D (the 9). The dominant seventh with a ninth: funky and full.
- Notes
- C · E · G · B♭ · D
- Formula
- 1 · 3 · 5 · ♭7 · 9
- Also written
- Cdom9
- Found in
- Outside the major and minor keys
Neighbours
Chords close to C9
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All 348 chords
Every chord type on every root, each with its own page.
C
D♭
D
E♭
E
F
G♭
G
A♭
A
B♭