C9 chord
C dominant 9th
C
E
G
Bb
C5
D
Want it in context? Open C9 on the full piano.
Notes
- CR
- E3
- G5
- Bbb7
- D9
Formula: R – 3 – 5 – b7 – 9
C9 inversions
The same notes, with a different note in the bass.
Root position C9
C
E
G
Bb
C5
1st inversion C9/E
C4
E
G
Bb
C
2nd inversion C9/G
C4
G
Bb
C
E
3rd inversion C9/Bb
C4
Bb
C
E
G
More C chords
Dominant 9th chords in other keys
FAQ
What notes are in the C9 chord?
The C dominant 9th chord (C9) has 5 notes: C, E, G, Bb and D.
How do you play C9 on the piano?
Put your right hand on C, E, G, Bb and D, starting from C. A common fingering for three-note chords is thumb (1), middle finger (3) and little finger (5).
What is the formula of a dominant 9th chord?
R – 3 – 5 – b7 – 9 (in semitones from the root: 0, 4, 7, 10, 14).