C dominant ninth piano chord - C9

The C dominant ninth chord is a 5-note chord consisting of the notes C, E, G, Bb and D.
You can see these notes highlighted in the interactive piano chart below.
The chord itself is often abbreviated as C9.

Interactive piano diagram for the C dominant ninth chord

Piano keyboard displaying the C dominant ninth chord with the notes B#CFbEGA#BbD

Extended Chords

Chords that are a superset of C9. The chords include more notes but always C, E, G, Bb and D.

Reduced chords

Chords that are a subset of C9. These contain less notes but all of them are included in C9.

Scales with C9

Below you find all scales that include C9:

  • bebop
  • mixolydian
  • mixolydian b6
  • lydian dominant
  • lydian minor
  • bebop minor
  • composite blues
  • messiaen's mode #3
  • chromatic

C dominant ninth piano chord chart image

In case you prefer a non-interactive variant of the chord chart, we've embedded a PNG image below that shows the notes for the the C9 chord. Feel free to save or share the image as needed.

Piano chord chart for the C dominant ninth chord (C9). The notes C, E, G, Bb and D are highlighted.