Construction
C♯ Minor Add 9 = Root + Minor 3rd + Perfect 5th + Major 2nd = C♯, E, G♯, D♯
| Note | Interval | Degree |
|---|---|---|
| C♯ | Root | 1 |
| E | Minor 3rd | ♭3 |
| G♯ | Perfect 5th | 5 |
| D♯ | Major 2nd | 2 |
Fingering
| Note | Key color | Right hand | Left hand |
|---|---|---|---|
| C♯ | black | index finger (2) | little finger (5) |
| E | white | middle finger (3) | ring finger (4) |
| G♯ | black | ring finger (4) | middle finger (3) |
| D♯ | black | little finger (5) | index finger (2) |
Right hand: index finger (2) on C♯, middle finger (3) on E, ring finger (4) on G♯, little finger (5) on D♯.
Left hand: little finger (5) on C♯, ring finger (4) on E, middle finger (3) on G♯, index finger (2) on D♯.
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, E Major: 4 sharps (F♯, C♯, G♯, D♯).
F♯C♯G♯D♯
Order of sharps
Sharps are added to a key signature in a fixed order. Each new sharp key adds the next sharp on the list.
F♯C♯G♯D♯A♯E♯B♯
Mnemonic: Father Charles Goes Down And Ends Battle
Chords in the Key of C♯ Minor
These are the triads built on each degree of C♯ Minor:
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♯ – E – G♯ – D♯. On piano, play these notes together to sound the chord.
What is the C# piano chord?
The C# piano chord (written C♯ Minor Add 9) uses the same keys: C♯ – E – G♯ – D♯. The # and ♯ symbols name the same black key.