B4+♯1+♯9
B major fourth, add sharp root, 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: B4+♯1+♯2, B4+♯2+♭2, C♭4+♯1+♯2, C♭4+♯1+♯9, C♭4+♯2+♭2, D2+6+7+♯1.
Notes in this chord: B, B♯, D♯, E, C♯♯. Integer notation: {0, 2, 3, 4, 11}.
Nearby chords (one less note): B4+♯1, B4+♯2, D2+6+7, D2+7+♯1, B3+♯1+♯2.
Nearby chords (one more note): CM9+♯2, B+4+♯1+♯2, B4+2+♯1+♯2, G13♭7♭13-1, A♭+♯2+♯4+♯5, B♭♭5+2+4+♯1, Bdim+4+♯1+♯3.
Parallel chords (same structure, different root): C4+♯1+♯9, D4+♯1+♯9, E4+♯1+♯9, F4+♯1+♯9, G4+♯1+♯9, A4+♯1+♯9, C♭4+♯1+♯9, D♭4+♯1+♯9, E♭4+♯1+♯9, F♭4+♯1+♯9, G♭4+♯1+♯9, A♭4+♯1+♯9, B♭4+♯1+♯9, C♯4+♯1+♯9, D♯4+♯1+♯9, E♯4+♯1+♯9, F♯4+♯1+♯9, G♯4+♯1+♯9, A♯4+♯1+♯9, B♯4+♯1+♯9.
Experimental fretting charts for guitar standard EADGBE tuning (change tuning or instrument):
(loading)