Short answer: A#+7b9 is a A# Augmented 7♭9 chord containing the notes A♯, C♯♯, E♯♯, G♯, B. It has 4 inversions. Use the diagrams below to learn each voicing on the keyboard.
Also known as: A#7♯5b9, A#7+5b9
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Notes: A♯, C♯♯, E♯♯, G♯, B
Notes: C♯♯, E♯♯, G♯, A♯, B
Notes: E♯♯, G♯, A♯, B, C♯♯
Notes: G♯, A♯, B, C♯♯, E♯♯
A#+7b9 is a A# Augmented 7♭9 chord. It contains the notes A♯, C♯♯, E♯♯, G♯, B. On piano, play these notes simultaneously to sound the chord.
To play A#+7b9 on piano, press the keys A♯, C♯♯, E♯♯, G♯, B together. The root position uses these exact notes. There are 4 inversions available, each rearranging the same notes in a different order.
The A#+7b9 chord contains the notes: A♯, C♯♯, E♯♯, G♯, B.
A#+7b9 has 4 inversions. Each inversion rearranges the notes so a different note is at the bottom. The root position starts with the root note, the first inversion moves it to the top, and so on.
A#+7b9 is also known as A#7♯5b9, A#7+5b9. These are different notations for the same chord with the same notes: A♯, C♯♯, E♯♯, G♯, B.