As the open C chord, with an added finger (the 4th finger). When the 1st string is omitted, it becomes a moveable dominant 7 shape that can be transposed to different keys. The image below contains the musical notation, chord chart, tabs and scale degrees for the open C7 chord.
How to play the open C7 chord
- Place your 3rd finger on the 3rd fret of the 5th string.
- Place your 2nd finger on the 2nd fret of the 4th string.
- Place your 4th finger on the 3rd fret of the 3rd string.
- Place your 1st finger on the 1st fret of the 2nd string.
- Strum the first five strings.
C dominant 7 (open chord shape) info
- This shape is an open chord, and the most common (and easiest) way to play the C7 chord.
- It contains the notes (from the 5th string down) C, E, Bb, C and E.
- It contains the 1 (root), 3, b7, 1, and 5 in the key of C.
- It is a Dominant 7 chord.
- When placed without the open E string (1st string), this becomes a moveable shape, that is used for other dominant 7 chords.