ii–V–I
in F major
Piano chord
C Dominant 9th Piano Chord (C9)
The C Dominant 9th chord on piano is made of the notes C, E, G, B♭ and D. Funky and jazzy. A dominant 7th with an added 9th.
Tap any key to hear it.
What notes are in C Dominant 9th?
5 notes, built 1 – 3 – 5 – ♭7 – 9 up from C.
- Notes
- C – E – G – B♭ – D
- Formula
- 1 – 3 – 5 – ♭7 – 9
- Semitones from the root
- 0 – 4 – 7 – 10 – 14
- Symbol
- C9
- Chord type
- Dominant 9th, 5 notes
How to play C Dominant 9th on piano
C Dominant 9th spans more than an octave, so it is usually split between the hands.
- Left hand: C and G (fingers 5 and 1).
- Right hand: E, B♭, D (fingers 1, 3 and 5).
C Dominant 9th inversions
Each inversion puts a different note of the chord in the bass. Written as a slash chord: C9/E, C9/G, C9/B♭.
Can you find C Dominant 9th?
Tap the notes on the keyboard, then check. Six chords, starting with this one.
1 / 6 Tap the notes of C Dominant 9th (C9)
Score 0
Any octave, any order. Each key you tap plays.
What key is C Dominant 9th in?
The keys whose scale contains every note of C9, with the chord’s Roman numeral in each.
Major keys
- F majorV9
Minor keys
- F minorV9 (harmonic minor)
- D minorVII9
C Dominant 9th chord FAQ
What notes are in the C Dominant 9th chord?
C Dominant 9th (C9) has 5 notes: C, E, G, B♭ and D. Its formula is 1 – 3 – 5 – ♭7 – 9, counted up from C.
How do you play C Dominant 9th on the piano?
Spread it over two hands: the left hand plays C and G (fingers 5 and 1), the right hand plays E, B♭, D (fingers 1, 3 and 5).
What are the inversions of C Dominant 9th?
1st inversion: E, G, B♭, C, D (C9/E). 2nd inversion: G, B♭, C, D, E (C9/G). 3rd inversion: B♭, C, D, E, G (C9/B♭).
What key is C Dominant 9th in?
C9 belongs to F major (V9) and D minor (VII9).