Root position C7
C – E – G – B♭
Right hand 1-2-3-5Left hand 5-3-2-1
C7 C E G B♭ Formula 1 3 5 b7 4 notes
The C7 chord has 4 notes: C, E, G, B♭. It is the major triad with a minor seventh on top (10 half steps above C): the dominant chord that pulls towards a key a fifth below.
| Note | Interval from the root | Half steps |
|---|---|---|
| C | Root | 0 |
| E | Major 3rd | 4 |
| G | Perfect 5th | 7 |
| B♭ | Minor 7th | 10 |
The same notes in a different order. The lowest note changes the name after the slash; the fingering below is the usual one - right hand from the lowest key up, left hand from the lowest key up too.
C – E – G – B♭
Right hand 1-2-3-5Left hand 5-3-2-1
E – G – B♭ – C
Right hand 1-2-3-5Left hand 5-4-2-1
G – B♭ – C – E
Right hand 1-2-3-5Left hand 5-3-2-1
B♭ – C – E – G
Right hand 1-2-3-5Left hand 5-3-2-1
Every key where C7 is one of the seven chords, with its Roman numeral, and the scales whose notes include all of it - the ones to improvise over it.
The C7 chord (C7) is made of C, E, G, B♭. Its formula is 1 3 5 b7 - the root, then the intervals of a dominant 7th chord.
Put your right thumb on C and play the other notes with fingers 1-2-3-5. With the left hand, use fingers 5-3-2-1 from the lowest key up.
root position C7 (C E G B♭); 1st inversion C7/E (E G B♭ C); 2nd inversion C7/G (G B♭ C E); 3rd inversion C7/B♭ (B♭ C E G).
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