b9 or a#9

Notes in this chord:

a#/b c d f g#/a

Alternate Names:

b7add9, bnintha#7add9, a#ninth

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• By Key
  • C Major
  • C#/Db Major
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  • D#/Eb Major
  • E Major
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  • A Major
  • A#/Bb Major
  • B Major
• By Type
  • Major
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  • 1/2 Diminished7
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  • 9sus4
  • 9b5
  • 9#5