The C♭ Major 7♯5 chord is a four-note chord made up of C♭, E♭, G, and B♭.
Construction
C♭ Major 7♯5 = Root + Major 3rd + Minor 6th + Major 7th = C♭ · E♭ · G · B♭
| Note | Interval | Degree |
|---|---|---|
| C♭ | Root | 1 |
| E♭ | Major 3rd | 3 |
| G | Minor 6th | ♯5 |
| B♭ | Major 7th | 7 |
Key Signature
A chord has no key signature of its own, but the C♭ Major 7♯5 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♭ Major 7♯5 — Frequently Asked Questions
What is the C♭ Major 7♯5 chord on piano?
The C♭ Major 7♯5 chord contains the notes C♭ – E♭ – G – B♭. On piano, play these notes together to sound the chord.