C7 chord (C dominant seventh) on piano
C7 (C dominant seventh) has four notes: C, E, G and B flat. Its formula is 1, 3, 5, b7. In major keys, C7 is the V7 chord in F major.
C7 inversions and fingering
C E G Bb · RH 1-2-3-5 · LH 5-3-2-1
E G Bb C · RH 1-2-4-5 · LH 5-3-2-1
G Bb C E · RH 1-2-3-5 · LH 5-3-2-1
Bb C E G · RH 1-2-3-5 · LH 5-4-2-1
C E Bb · LH 5-3-1
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| Symbol | C7 |
|---|---|
| Also written | Cdom7 |
| Notes | C E G Bb |
| Formula | 1 3 5 b7 |
| Intervals | root, major third, perfect fifth, minor seventh |
| Type | Dominant seventh chord |
C7 across the keyboard
Piano, C3 to C5. Notes in this scale, low to high: C3 (1), E3 (3), G3 (5), Bb3 (flat 7), C4 (1), E4 (3), G4 (5), Bb4 (flat 7), C5 (1).
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Questions
What notes are in the C7 chord?
C7 (C dominant seventh) has four notes: C, E, G and B flat. Its formula is 1, 3, 5, b7. C is the root, E is the major third, G is the perfect fifth and Bb is the minor seventh.
How do you play C7 on piano?
Play C, E, G and Bb together. Root position: C E G Bb · RH 1-2-3-5 · LH 5-3-2-1.
What key is C7 in?
In major keys, C7 is the V7 chord in F major. It is diatonic to those keys, so it fits songs in any of them.
What is the difference between C7 and C?
C7 is C (C, E and G) with a flat 7th added: Bb.