C sharp dominant ninth piano chord - C#9

The C sharp dominant ninth chord is a 5-note chord consisting of the notes C#, E#, G#, B and D#.
You can see these notes highlighted in the interactive piano chart below.
The chord itself is often abbreviated as C#9.

Interactive piano diagram for the C sharp dominant ninth chord

Piano keyboard displaying the C sharp dominant ninth chord with the notes E#FCbBC#DbG#AbD#Eb

Extended Chords

Chords that are a superset of C#9. The chords include more notes but always C#, E#, G#, B and D#.

Reduced chords

Chords that are a subset of C#9. These contain less notes but all of them are included in C#9.

Scales with C#9

Below you find all scales that include C#9:

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

C sharp 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 C#9 chord. Feel free to save or share the image as needed.

Piano chord chart for the C sharp dominant ninth chord (C#9). The notes C#, E#, G#, B and D# are highlighted.