C-flat major
C-flat major (or the key of C-flat) is a major scale based on C♭, consisting of the pitches C♭, D♭, E♭, F♭, G♭, A♭, and B♭. Its key signature has seven flats. Its relative minor is A-flat minor (or enharmonically G-sharp minor). Its parallel minor, C-flat minor, is usually replaced by B minor, since C-flat minor's three double-flats make it impractical to use. The direct enharmonic equivalent of C-flat major is B major, a key signature with five sharps.
| Relative key | A-flat minor |
|---|---|
| Parallel key | C-flat minor (theoretical) →enharmonic: B minor |
| Dominant key | G-flat major |
| Subdominant | F-flat major (theoretical) →enharmonic: E major |
| Enharmonic | B major |
| Component pitches | |
| C♭, D♭, E♭, F♭, G♭, A♭, B♭ | |
The C-flat major scale is:
C-flat major is the only major or minor key, other than theoretical keys, which has "flat" or "sharp" in its name, but whose tonic note is the enharmonic equivalent of a natural note (a white key on a keyboard instrument).
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