Cdim+♭2

C diminished, add flat second

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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+♯1, Cdim+♭9, A♭11-1-9, B♯dim+♯1, B♯dim+♭2, B♯dim+♭9.

Notes in this chord: C, D♭, E♭, G♭. Integer notation: {0, 1, 3, 6}.

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

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

Nearby chords (one less note): Cdim, G♭6-3, D♭2+♯7, G♭sus4♯4.

Nearby chords (one more note): A♭7+4, B+2+♯1, G♭6+♯4, Cdim7+♯1, Cm+♯1+♯4, Cdim+2+♯1, Cdim+4+♯1, B♯♭5+♯1+♯2.

Parallel chords (same structure, different root): Ddim+♭2, Edim+♭2, Fdim+♭2, Gdim+♭2, Adim+♭2, Bdim+♭2, C♭dim+♭2, D♭dim+♭2, E♭dim+♭2, F♭dim+♭2, G♭dim+♭2, A♭dim+♭2, B♭dim+♭2, C♯dim+♭2, D♯dim+♭2, E♯dim+♭2, F♯dim+♭2, G♯dim+♭2, A♯dim+♭2, B♯dim+♭2.

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

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