G7 chord
G dominant seventh
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ukulele fretboard
3
5
7
10
The G7 chord has the formula 1, 3, 5, b7 with notes G, B, D, F
The dominant seventh chord is a mildly dissonant variation of the major chord that is used in many genres, like blues, funk, and rock. In blues, entire progressions can be composed of dominant seventh chords.