Dominant 7th · beginner
C dominant 7th(C7)
C7 is the C shape plus a pinky, and the standard dominant sound of blues in F. A perfect first four-finger chord — it teaches pinky independence without leaving the familiar C geometry.
Notes
Intervals
Finger placement
- 1Standard C major grip, plus pinky (4) on the 3rd fret of the G string.
Common mistakes
- Forgetting the pinky and playing plain C.
- Planting the pinky so flat that it mutes the B string.
- Strumming the low E, which isn't part of this open C7 voicing.
Coaching tips
- Form a normal C, then drop the pinky onto the G string — that one note is the whole difference.
- Keep the same thumb position as C major so the pinky has room to arch.
- Use C7→F as your blues-in-F practice pair once the shape is clean.
Troubleshooting
Pinky mutes the B string
Arch the pinky more steeply; press with the very tip.
Can't reach the pinky note
Slide the whole C shape a millimeter toward the nut and bring the elbow in toward your ribs.
Easier alternatives
- C major
Frequently asked questions
What notes are in the C dominant 7th chord?
C dominant 7th contains C, E, G, A# — the intervals R, 3, 5, b7 from the root C.
Is C dominant 7th a beginner chord?
C dominant 7th is rated beginner. C7 is the C shape plus a pinky, and the standard dominant sound of blues in F. A perfect first four-finger chord — it teaches pinky independence without leaving the familiar C geometry.
C dominant 7th: pinky mutes the b string — what should I do?
Arch the pinky more steeply; press with the very tip.
C dominant 7th: can't reach the pinky note — what should I do?
Slide the whole C shape a millimeter toward the nut and bring the elbow in toward your ribs.