A+4+♯1+♭1

A major, add fourth, add sharp root, add flat 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: AM11♭9, A11♯7♭9, E13♭5-9, F♭13♭5-9, B♭9♯9♭5+♯7, B♭9♯9♭5+♭1.

Notes in this chord: A♭, A, A♯, C♯, D, E. Integer notation: {1, 2, 4, 8, 9, 10}.

Nearby chords (one less note): A+4+♯1, A+4+♭1, E7♭5+4, A+♯1+♭1, B♭9♯9♭5, A4+♯1+♯7.

Nearby chords (one more note): E13♭5, AM11+♯1, E13♯9♭5, E13♭5♭9, AM11♯9+♯1, B♭11♯9♭5+♯7.

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

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

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