C augmented seventh piano chord - Cmaj7#5

The C augmented seventh chord is a 4-note chord consisting of the notes C, E, G# and B.
You can see these notes highlighted in the interactive piano chart below.
The chord itself is often abbreviated as Cmaj7#5.

Interactive piano diagram for the C augmented seventh chord

Piano keyboard displaying the C augmented seventh chord with the notes B# C Fb E Cb B G# Ab

Reduced chords

Chords that are a subset of Cmaj7#5. These contain less notes but all of them are included in Cmaj7#5.

C augmented seventh 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 Cmaj7#5 chord. Feel free to save or share the image as needed.

Piano chord chart for the C augmented seventh chord (Cmaj7#5). The notes C, E, G# and B are highlighted.