C dominant sharp ninth piano chord - C7#9

The C dominant sharp 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 C7#9.

Interactive piano diagram for the C dominant sharp ninth chord

Piano keyboard displaying the C dominant sharp ninth chord with the notes B# C Fb E G A# Bb D# Eb

Reduced chords

Chords that are a subset of C7#9. These contain less notes but all of them are included in C7#9.

C 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 C7#9 chord. Feel free to save or share the image as needed.

Piano chord chart for the C dominant sharp ninth chord (C7#9). The notes C, E, G, Bb and D# are highlighted.