B sharp minor, add fourth, add ninth

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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: Cm+2+4, Cm+4+9, B♯m+2+4, Cm+2+11, B♯m+2+11, B♭11♭7-1.

Notes in this chord: B♯, D♯, E♯, F♯♯, C♯♯. Integer notation: {0, 2, 3, 5, 7}.

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

Keys in which this chord fits with enharmonic spelling: E♭M, B♭M, Cm, Gm

Nearby chords (one less note): Cm+2, Cm+4, Cm4+2, F2+6+7, Csus4+2.

Nearby chords (one more note): Cm11, F9+6, B♭13-1, Cm11♯7, C+2+4+♯2, D♭M9♭5+♯1, B♭13♭7♭13-1.

Parallel chords (same structure, different root): Cm+4+9, Dm+4+9, Em+4+9, Fm+4+9, Gm+4+9, Am+4+9, Bm+4+9, C♭m+4+9, D♭m+4+9, E♭m+4+9, F♭m+4+9, G♭m+4+9, A♭m+4+9, B♭m+4+9, C♯m+4+9, D♯m+4+9, E♯m+4+9, F♯m+4+9, G♯m+4+9, A♯m+4+9.

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