The C♭ 7♭9 chord is a five-note chord made up of C♭, E♭, G♭, B♭♭, and D♭♭. It is built from a root, major third, perfect fifth, minor seventh, and minor ninth.
Construction
C♭ 7♭9 = Root + Major 3rd + Perfect 5th + Minor 7th + Minor 2nd = C♭ · E♭ · G♭ · B♭♭ · D♭♭
| Note | Interval | Degree |
|---|---|---|
| C♭ | Root | 1 |
| E♭ | Major 3rd | 3 |
| G♭ | Perfect 5th | 5 |
| B♭♭ | Minor 7th | ♭7 |
| D♭♭ | Minor 2nd | ♭9 |
Key Signature
A chord has no key signature of its own, but the C♭ 7♭9 is the tonic (I) chord of Cb Major, whose key signature has 7 flats (B♭, E♭, A♭, D♭, G♭, C♭, F♭).
B♭E♭A♭D♭G♭C♭F♭
Order of flats
Flats are added in a fixed order — the reverse of the sharp order. Each new flat key adds the next flat on the list.
B♭E♭A♭D♭G♭C♭F♭
Mnemonic: Battle Ends And Down Goes Charles’ Father
Chords in the Key of C♭ Major
These are the triads built on each degree of the C♭ major scale:
C♭ 7♭9 — Frequently Asked Questions
What is the C♭ 7♭9 chord on piano?
The C♭ 7♭9 chord contains the notes C♭ – E♭ – G♭ – B♭♭ – D♭♭. On piano, play these notes together to sound the chord.
What notes are in the Cb 7♭9 chord?
The Cb 7♭9 chord (Cb7♭9) contains 5 notes: Cb, E, G, Bb, Db. Formula: R-M3-P5-m7-m9.
How is Cb7♭9 used in music?
Cb7♭9 is used in jazz, fusion, and contemporary music to add harmonic color. It appears as a dominant or tonic chord depending on context.
What is the scale degree formula for Cb7♭9?
Cb7♭9 uses scale degrees 1-3-5-b7-b9, giving it its distinctive sound.