C7-shape Chord
The movable dominant seventh based on the open C7 grip.
Dominant seventh chords add a little tension to a chord progression, creating a desire for movement. The C-shape dominant seventh chord (C7 for short) adds a minor seventh interval to the C-shape major triad.
The core C7 shape
This is the movable version of the familiar open C7 chord, fingered x3241x. Compared to the C major shape, the 5 behind the grip on the third string moves ahead three frets, where the little finger plays the ♭7 at the same fret as the root. That note is the main feature of this chord, so make sure it rings out.
Study and practice
Learn the chord grips
Master the C7 chord using the exercises described in How to Master New Chord Grips.
Alternate between major and dominant seventh
Practice switching between the C-shape major and dominant seventh chords.
V7-I cadence
(Tip: Change key in settings)
Practice switching between the C-shape V7 and I chords of a key. This is a very common chord change, known as a perfect cadence.