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

The A sharp dominant sharp ninth chord is a 5-note chord consisting of the notes A#, C##, E#, G# and B##.
You can see these notes highlighted in the interactive piano chart below.
The chord itself is often abbreviated as A#7#9.

Interactive piano diagram for the A sharp dominant sharp ninth chord

Piano keyboard displaying the A sharp dominant sharp ninth chord with the notes A# Bb D E# F G# Ab C# Db

Reduced chords

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

A 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 A#7#9 chord. Feel free to save or share the image as needed.

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