A+2+♯2+♯4

A major, add second, add sharp second, add sharp fourth

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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: B11-5+♯1, B11-5+♭2, A+2+♯4+♯9, A+9+♯2+♯4, C♭11-5+♯1, C♭11-5+♭2.

Notes in this chord: A, B, B♯, C♯, D♯, E. Integer notation: {0, 1, 3, 4, 9, 11}.

Nearby chords (one less note): A+2+♯2, A+2+♯4, A+♯2+♯4, B4+2+♯1, B4+7+♯1, Adim+2+♯3.

Nearby chords (one more note): B11+♯1, B11♯5+♯1, B11♭5+♯1, B13-5+♯1, A+2+4+♯2+♯4, A+2+♯1+♯2+♯4.

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

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

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