C-double-flat half-diminished 7th flat 9th chord

Also called: C-double-flat minor 7th flat 5th flat 9th
Symbols: C𝄫^ø7♭9
C𝄫m^7♭5♭9
Notes: C-double-flat (root)
E-triple-flat (minor 3rd)
G-triple-flat (diminished 5th)
B-triple-flat (minor 7th)
D-triple-flat (minor 9th)

Bass doubling

Sustain

This is the full, close, root-position voicing.
This is a full, open, root-position voicing.

Type

Root

Chords built on the tonic of the diatonic modes

Lydian	C𝄫	C𝄫M⁷	C𝄫M⁹	C𝄫M^9♯11	C𝄫M^13♯11	C𝄫^add9	C𝄫^add♯11	C𝄫⁶	C𝄫^6add9	C𝄫^6add♯11	C𝄫⁵	C𝄫^sus2
Ionian		C𝄫M⁷	C𝄫M⁹	C𝄫M¹¹	C𝄫M¹³		C𝄫^add11			C𝄫^6add11			C𝄫^sus4
Mixolydian		C𝄫⁷	C𝄫⁹	C𝄫¹¹	C𝄫¹³		C𝄫^add11			C𝄫^6add11				C𝄫^7sus4	C𝄫^9sus4	C𝄫^13sus4
Dorian	C𝄫m	C𝄫m⁷	C𝄫m⁹	C𝄫m¹¹	C𝄫m¹³	C𝄫m^add9	C𝄫m^add11	C𝄫m⁶	C𝄫m^6add9	C𝄫m^6add11						C𝄫^13sus4
Aeolian			C𝄫m⁹	C𝄫m¹¹	C𝄫m^11♭13	C𝄫m^add9		C𝄫m^♭6	C𝄫m^♭6add9	C𝄫m^♭6add11
Phrygian			C𝄫m^7♭9	C𝄫m^11♭9	C𝄫m^11♭9♭13	C𝄫m^add♭9		C𝄫m^♭6	C𝄫m^♭6add♭9	C𝄫m^♭6add11
Locrian	C𝄫^o	C𝄫^ø7	C𝄫^ø7♭9	C𝄫^ø11♭9	C𝄫^{ø11♭9♭13}

Mode

Tonic

Chords built on each degree of the mode

Please note: This app doesn’t include every chord, nor every name, symbol, or voicing of the included chords.