C dominant flat ninth piano chord - C7b9

The C dominant flat ninth chord is a 5-note chord consisting of the notes C, E, G, Bb and Db.
You can see these notes highlighted in the interactive piano chart below.
The chord itself is often abbreviated as C7b9.

Interactive piano diagram for the C dominant flat ninth chord

Piano keyboard displaying the C dominant flat ninth chord with the notes B# C Fb E G A# Bb C# Db

Reduced chords

Chords that are a subset of C7b9. These contain less notes but all of them are included in C7b9.

C dominant flat 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 C7b9 chord. Feel free to save or share the image as needed.

Piano chord chart for the C dominant flat ninth chord (C7b9). The notes C, E, G, Bb and Db are highlighted.