The C Minor Add 9 chord is a four-note chord made up of C, D, E♭, and G.
Construction
C Minor Add 9 = Root + Major 2nd + Minor 3rd + Perfect 5th = C · D · E♭ · G
| Note | Interval | Degree |
|---|---|---|
| C | Root | 1 |
| D | Major 2nd | 2 |
| E♭ | Minor 3rd | ♭3 |
| G | Perfect 5th | 5 |
Key Signature
A chord has no key signature of its own, but the C Minor Add 9 is the tonic (i) chord of C Minor, which shares the signature of its relative major, Eb Major — 3 flats (B♭, E♭, A♭).
B♭E♭A♭
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 Minor
These are the triads built on each degree of the C minor scale:
C Minor Add 9 — Frequently Asked Questions
What is the C Minor Add 9 chord on piano?
The C Minor Add 9 chord contains the notes C – D – E♭ – G. On piano, play these notes together to sound the chord.