Construction
C♯ Add 4 = Root + Major 3rd + Perfect 4th + Perfect 5th = C♯, E♯, F♯, G♯
| Note | Interval | Degree |
|---|---|---|
| C♯ | Root | 1 |
| E♯ | Major 3rd | 3 |
| F♯ | Perfect 4th | 4 |
| G♯ | Perfect 5th | 5 |
Fingering
| Note | Key color | Right hand | Left hand |
|---|---|---|---|
| C♯ | black | index finger (2) | little finger (5) |
| E♯ | white | middle finger (3) | ring finger (4) |
| F♯ | black | ring finger (4) | middle finger (3) |
| G♯ | black | little finger (5) | index finger (2) |
Right hand: index finger (2) on C♯, middle finger (3) on E♯, ring finger (4) on F♯, little finger (5) on G♯.
Left hand: little finger (5) on C♯, ring finger (4) on E♯, middle finger (3) on F♯, index finger (2) on G♯.
Key Signature
A chord has no key signature of its own, but the C♯ Add 4 is the tonic (I) chord of C♯ Major, whose key signature has 7 sharps (F♯, C♯, G♯, D♯, A♯, E♯, B♯).
F♯C♯G♯D♯A♯E♯B♯
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♯ Major
These are the triads built on each degree of C♯ Major:
C♯ Add 4 : Frequently Asked Questions
What is the C♯ Add 4 chord on piano?
The C♯ Add 4 chord contains the notes C♯ – E♯ – F♯ – G♯. On piano, play these notes together to sound the chord.
What is the C# piano chord?
The C# piano chord (written C♯ Add 4) uses the same keys: C♯ – E♯ – F♯ – G♯. The # and ♯ symbols name the same black key.