A3+2+♯9
A major third, add second, add sharp ninth

Choose audio sample set:
MSK 007 Leapfrog VCF
(patch;
see
in online store)
MSK 009 Coiler VCF
(patch;
see
in online store)
Equivalent chord symbols: A3+2+♯2, A3+9+♯2, B2+7+♯1, B2+♯1+♯6, C♭2+7+♯1, C♭2+♯1+♯6.
Notes in this chord: A, B, C♯, B♯. Integer notation: {0, 1, 9, 11}.
Nearby chords (one less note): A3+2, A2+♯2, A3+♯2, B2+♯1.
Nearby chords (one more note): A+2+♯2, A4+2+♯2, F+♯4+♯5, G4+2+♯4, G♭m+4+♯4, A♭4+♯1+♯2, Adim+2+♯3, A3+2+♯1+♯2.
Parallel chords (same structure, different root): C3+2+♯9, D3+2+♯9, F3+2+♯9, G3+2+♯9.
Experimental fretting charts for guitar standard EADGBE tuning (change tuning or instrument):
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