C sharp seventh piano chord (C#7)
Also written Db7 (D flat seventh)
The seventh chord (dominant seventh) adds a minor seventh to the major chord. It creates tension that wants to resolve: essential in blues, jazz and rock’n’roll.
On the keyboard
Root position
- Notes
- C♯ – E♯ – G♯ – B
- Fingering (right hand)
- 1 – 2 – 3 – 5
1st inversion
- Notes
- E♯ – G♯ – B – C♯
- Fingering (right hand)
- 1 – 2 – 3 – 5
2nd inversion
- Notes
- G♯ – B – C♯ – E♯
- Fingering (right hand)
- 1 – 2 – 3 – 5
3rd inversion
- Notes
- B – C♯ – E♯ – G♯
- Fingering (right hand)
- 1 – 2 – 3 – 5
Chord notes
| Note | Interval |
|---|---|
| C♯ (C sharp) | root |
| E♯ (E sharp) | major third |
| G♯ (G sharp) | perfect fifth |
| B | minor seventh |
Formula: 1 – 3 – 5 – b7 · C♯ – E♯ – G♯ – B
A progression with this chord
The ii – V – I: the seventh chord (V7) builds tension that resolves to the tonic chord (I).