The C♯ Major scale contains the notes C♯, D♯, E♯, F♯, G♯, A♯, B♯. Its key signature has 7♯.
| Degree | Note | Name | Interval |
|---|---|---|---|
| 1 | C♯ | Tonic | P1 |
| 2 | D♯ | Supertonic | M2 |
| 3 | E♯ | Mediant | M3 |
| 4 | F♯ | Subdominant | P4 |
| 5 | G♯ | Dominant | P5 |
| 6 | A♯ | Submediant | M6 |
| 7 | B♯ | Leading Tone | M7 |
These are the seven diatonic triads built on each degree of the C♯ Major scale. Click a chord to see its notes, fingering and inversions.
| Roman numerals | Chords |
|---|---|
| I – IV – V – I | C♯ – F♯ – G♯ – C♯ |
| I – V – vi – IV | C♯ – G♯ – A♯m – F♯ |
| ii – V – I | D♯m – G♯ – C♯ |
| I – vi – IV – V | C♯ – A♯m – F♯ – G♯ |
The C♯ Major scale consists of the notes C♯, D♯, E♯, F♯, G♯, A♯, B♯.
The key signature of C♯ Major has 7♯.
The relative key of C♯ Major is A♯ Minor — it shares the same key signature.
The diatonic chords in the key of C♯ Major are C♯, D♯m, E♯m, F♯, G♯, A♯m, B♯dim.