A3+9+♯1

A major third, add ninth, add sharp root

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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: A3+2+♯1, B2+7+♯7, B2+♯6+♯7, C♭2+7+♯7, B2+♯7+♯13, C♭2+♯6+♯7.

Notes in this chord: A, A♯, C♯, B. Integer notation: {1, 9, 10, 11}.

Nearby chords (one less note): A3+2, A2+♯1, A3+♯1, B2+♯7.

Nearby chords (one more note): A+2+♯1, A4+2+♯1, B9-5+♯7, D♭7♯5+6, G♭+4+♯2, A♭m4+2+♯1, Gdim+2+♯3, A3+2+♯1+♯2.

Parallel chords (same structure, different root): C3+9+♯1, D3+9+♯1, E3+9+♯1, F3+9+♯1, G3+9+♯1, B3+9+♯1, C♭3+9+♯1, D♭3+9+♯1, E♭3+9+♯1, F♭3+9+♯1, G♭3+9+♯1, A♭3+9+♯1, B♭3+9+♯1, C♯3+9+♯1, D♯3+9+♯1, E♯3+9+♯1, F♯3+9+♯1, G♯3+9+♯1, A♯3+9+♯1, B♯3+9+♯1.

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

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