C sharp dominant sharp ninth piano chord - C#7#9

The C sharp dominant sharp 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#7#9.

Interactive piano diagram for the C sharp dominant sharp ninth chord

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

Reduced chords

Chords that are a subset of C#7#9. These contain less notes but all of them are included in C#7#9.

Scales with C#7#9

Below you find all scales that include C#7#9:

  • hungarian major
  • flamenco
  • spanish heptatonic
  • bebop minor
  • half-whole diminished
  • kafi raga
  • composite blues
  • messiaen's mode #3
  • chromatic

C sharp dominant sharp 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#7#9 chord. Feel free to save or share the image as needed.

Piano chord chart for the C sharp dominant sharp ninth chord (C#7#9). The notes C#, E#, G#, B and D## are highlighted.