root position: C7
C – E – G – B♭
C7 Piano Chord
The C dominant 7 chord (C7) is made of the notes C, E, G and B♭. Its formula is 1 – 3 – 5 – ♭7.
Notes in C7
| Note | Formula | Interval from root |
|---|---|---|
| C | 1 | root |
| E | 3 | major 3rd |
| G | 5 | perfect 5th |
| B♭ | ♭7 | minor 7th |
How to play C7 on piano
- Right hand: fingers 1-2-3-5
- Left hand: fingers 5-3-2-1
Fingers are numbered from the thumb (1) to the little finger (5).
C7 inversions
1st inversion: C7/E
E – G – B♭ – C
2nd inversion: C7/G
G – B♭ – C – E
3rd inversion: C7/Bb
B♭ – C – E – G
Other names for C7
C7 is also written as Cdom7.