G7-shape Chord
The movable dominant seventh based on the G shape, with the seventh in the treble grip.
Dominant seventh chords add a little tension to a chord progression, creating a desire for movement. The G-shape dominant seventh chord (G7 for short) adds a minor seventh interval to the G-shape major triad.
The core G7 shape
In the G7 shape, the first string drops from the root back two frets to the ♭7, just like the open G7 chord. That means the seventh lives in the treble grip:
The treble grip is fingered xx1112, a compact 5R3♭7 voicing. The bass shape of the G7 chord is the same as the plain G major shape; to sound the seventh, switch to the treble grip.
Study and practice
Learn the chord grips
Master the G7 treble grip using the exercises described in How to Master New Chord Grips.
Alternate between major and dominant seventh
Practice switching between the G-shape major and dominant seventh shapes, listening for the first string dropping from the root to the ♭7.
V7-I cadence
(Tip: Change key in settings)
Practice switching between the G-shape V7 and I chords of a key. This is a very common chord change, known as a perfect cadence.