A#9 sus chord
A#9 sus chord for piano with keyboard diagram.
Explanation: The A#9sus4 is a five-note chord (although the fifth is sometimes omitted).
Theory: The A#9sus4 is an suspended ninth chord with the third replaced by a perfect four. A#9sus4 is the same as A#11 without the major third (D).
A#9sus4
Notes: A# - D# - F - G# - C
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