Chord Colors

A sharp thirteen flat nine chord

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About the A sharp thirteen flat nine chord

A sharp thirteen flat nine sits outside the plain diatonic set, so it is borrowed to add color and tension. Think of it as an A dominant thirteenth flat nine chord.

Its notes are A, D, E, G, B, D, and G. The intervals are a major third, a perfect fifth, a minor seventh, a minor ninth, a perfect eleventh, and a major thirteenth.

Also called B flat thirteen flat nine, which spells the same notes enharmonically.

Positions

No stored guitar shape for this voicing yet. Build it from A♯, D, E♯, G♯, B, D♯, G.

Notes and intervals

1A sharpRoot
2DMajor 3rd
3E sharpPerfect 5th
4G sharpMinor 7th
5BMinor 9th
6D sharpPerfect 11th
7GMajor 13th

Shapes

Chromatic

CC♯D♭DD♯E♭EFF♯G♭GG♯A♭AA♯B♭B

Circle of Fifths

CGDAEBF♯G♭C♯D♭G♯A♭D♯E♭A♯B♭F

Other A sharp chords

Simpler triads

Suspended

Sixths and sevenths

Extensions

Altered

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A♯13(♭9) chord on guitar shown as colored note dots
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