B sharp diminished, add fourth

music notation
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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: Cdim+4, Cdim+11, Cdim+♭5, B♯dim+11, B♯dim+♭5, E♭2+6+♯2.

Notes in this chord: B♯, D♯, E♯, F♯. Integer notation: {0, 3, 5, 6}.

Keys in which this chord fits with this spelling: C♯M, A♯m

Keys in which this chord fits with enharmonic spelling: D♭M, B♭m

Nearby chords (one less note): Cm4, Cdim, E♭2+♯2, Fsus2♭2.

Nearby chords (one more note): F9♭9, A♭7+6, E♭m9♭7, B+♯1+♯4, Cm+4+♯4, Cdim+2+4, B♯♭5+4+♯2, Cdim+4+♯1.

Parallel chords (same structure, different root): Cdim+4, Ddim+4, Edim+4, Fdim+4, Gdim+4, Adim+4, Bdim+4, C♭dim+4, D♭dim+4, E♭dim+4, F♭dim+4, G♭dim+4, A♭dim+4, B♭dim+4, C♯dim+4, D♯dim+4, E♯dim+4, F♯dim+4, G♯dim+4, A♯dim+4.

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