A+4+♯2+♭1

A major, add fourth, add sharp second, 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, C9♯5♭7+♯1, C9♯5♭7+♭2.

Notes in this chord: A♭, A, B♯, C♯, D, E. Integer notation: {0, 1, 2, 4, 8, 9}.

Nearby chords (one less note): A+4+♯2, A+4+♭1, C9♯5♭7, E7♯5+6, A+♯2+♭1, A♭♭5+4+♯1.

Nearby chords (one more note): E13♯5, AM11+♯2, E13♯5♯9, E13♯5♭9, AM11♯9+♯1, AM11♯9+♯4.

Parallel chords (same structure, different root): C+4+♯2+♭1, D+4+♯2+♭1, E+4+♯2+♭1, F+4+♯2+♭1, G+4+♯2+♭1, B+4+♯2+♭1, C♭+4+♯2+♭1, D♭+4+♯2+♭1, E♭+4+♯2+♭1, F♭+4+♯2+♭1, G♭+4+♯2+♭1, A♭+4+♯2+♭1, B♭+4+♯2+♭1, C♯+4+♯2+♭1, D♯+4+♯2+♭1, E♯+4+♯2+♭1, F♯+4+♯2+♭1, G♯+4+♯2+♭1, A♯+4+♯2+♭1, B♯+4+♯2+♭1.

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

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