A sharp major ninth piano chord - A#maj9

The A sharp major 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#maj9.

Interactive piano diagram for the A sharp major ninth chord

Piano keyboard displaying the A sharp major ninth chord with the notes A#BbDE#FAB#C

Extended Chords

Chords that are a superset of A#maj9. The chords include more notes but always A#, C##, E#, G## and B#.

Reduced chords

Chords that are a subset of A#maj9. These contain less notes but all of them are included in A#maj9.

Scales with A#maj9

Below you find all scales that include A#maj9:

  • lydian
  • harmonic major
  • major
  • bebop
  • bebop major
  • ichikosucho
  • messiaen's mode #3
  • chromatic

A sharp major 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#maj9 chord. Feel free to save or share the image as needed.

Piano chord chart for the A sharp major ninth chord (A#maj9). The notes A#, C##, E#, G## and B# are highlighted.