A9♯9

A dominant ninth, sharp ninth

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MSK 007 Leapfrog VCF (patch; see in online store)
MSK 009 Coiler VCF (patch; see in online store)

Equivalent chord symbols: A7+♯2, A7+♭3, C6+♯1, C6+♭2, B♯6+♯1, B♯6+♭2.

Notes in this chord: A, C♯, E, G, B♯. Integer notation: {0, 1, 4, 7, 9}.

Nearby chords (one less note): A7, C6, A+♯2, C+♯1, Gsus4♭5+2.

Nearby chords (one more note): A11♯9, A9+♯2, A9♯9+6, C9♭9+6, C11♭7♭9, A11♯9♯11, C6+♯1+♯5.

Parallel chords (same structure, different root): C9♯9, D9♯9, E9♯9, F9♯9, G9♯9, B9♯9, C♭9♯9, D♭9♯9, E♭9♯9, F♭9♯9, G♭9♯9, A♭9♯9, B♭9♯9, C♯9♯9, D♯9♯9, E♯9♯9, F♯9♯9, G♯9♯9, A♯9♯9, B♯9♯9.

Experimental fretting charts for guitar standard EADGBE tuning (change tuning or instrument):

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