A♯+♯2+♯4+♭1

A sharp major, add sharp second, add sharp fourth, 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: A+4+♯1+♯5, A+♯1+♯3+♯5, A+11+♯1+♯5, A♯+♯4+♯9+♭1, B♭+♯2+♯4+♭1, B♭+♯4+♯9+♭1.

Notes in this chord: A, A♯, B♯♯, C♯♯, D♯♯, E♯. Integer notation: {1, 2, 4, 5, 9, 10}.

Nearby chords (one less note): A+4+♯1, A+4+♯5, A+♯1+♯5, B♭+♯2+♯4, B♭+♯2+♭1, B♭+♯4+♭1.

Nearby chords (one more note): FM13♯5, E13♭5♭9, C13-5+♯1, FM13♯5♭9, Bm11♭5+♯7, B♭M11♯9+♯4.

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

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

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