A+♯1+♯4+♯9

A major, add sharp root, add sharp fourth, add 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: B♭m11♯7♭5, A+♯1+♯2+♯4, A+♯1+♯2+♯11, E♭13♯11♭9-3, G♭13♯9♯11-1, B♭dim+2+4+♭1.

Notes in this chord: A, A♯, C♯, D♯, E, B♯. Integer notation: {0, 1, 3, 4, 9, 10}.

Nearby chords (one less note): A+♯1+♯2, A+♯1+♯4, A+♯2+♯4, Am+♯1+♯4, B♭dim+2+4, Adim+♯1+♯3.

Nearby chords (one more note): E♭13♯11♭9, G♭13♯9♯11, B♭M11♭5+♯2, B♭m11♯7+♯4, B♭m11♭5+♯7, A+2+♯1+♯2+♯4.

Parallel chords (same structure, different root): C+♯1+♯4+♯9, D+♯1+♯4+♯9, E+♯1+♯4+♯9, F+♯1+♯4+♯9, G+♯1+♯4+♯9, B+♯1+♯4+♯9, C♭+♯1+♯4+♯9, D♭+♯1+♯4+♯9, E♭+♯1+♯4+♯9, F♭+♯1+♯4+♯9, G♭+♯1+♯4+♯9, A♭+♯1+♯4+♯9, B♭+♯1+♯4+♯9, C♯+♯1+♯4+♯9, D♯+♯1+♯4+♯9, E♯+♯1+♯4+♯9, F♯+♯1+♯4+♯9, G♯+♯1+♯4+♯9, A♯+♯1+♯4+♯9, B♯+♯1+♯4+♯9.

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

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