A# major ninth chord

A#maj9 chord for piano with keyboard diagram.
Explanation: The A# major ninth is a five note chord and can be regarded as a A#maj7 with an added ninth. It is often abbreviated as A#maj9 (should not be confused with A#9).
Theory: The A#maj9 chord is constructed with a root, a major third, a perfect fifth, a major seventh and a major ninth.

A#maj9

A#maj9 chord diagram
Notes: A# - D - F - A - C

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A# chord categories

A# A#m A#7 A#m7 A#maj7 A#6 A#m6 A#6/9 A#5 A#9 A#m9 A#maj9 A#11 A#13 A#add A#7-5 A#7+5 A#sus A#dim A#aug