G7 Dominant 7th Chord

The G Dominant 7th chord contains: G, B, D, F.

These notes are derived by applying the dominant 7th interval formula (0–4–7–10 semitones) to the root note G.

A major triad with a minor seventh.

Creates harmonic tension that resolves to the tonic. The G7 chord is used across pop, rock, jazz, and classical music. As the I chord in the key of G major, it functions as the most stable resting point in progressions.

On piano, play G, B, D, F simultaneously.

In root position, G is the lowest note. Inversions move the bass note up — first inversion has B lowest, second inversion has D lowest.

A dominant 7th chord has 4 notes: G, B, D, F (in G).

It is a 7th chord, extending beyond the basic triad.

The G major chord (G–B–D) uses a major third (4 semitones), giving it a bright, happy sound.

The G minor chord (G–A#–D) uses a minor third (3 semitones), giving it a darker, emotional sound.

G7 naturally serves as the I chord in the key of G major.

It also appears as IV in the key of D major, and as V in the key of C major.

Yes.

The ukulele uses GCEA tuning with 4 strings. The G7 chord notes (G, B, D, F) can be fretted on a ukulele, though the shapes differ from guitar due to the 4-string layout and shorter scale.

In the key of G major, G7 pairs naturally with C major (IV), D major (V), and Em (vi).

The classic I–IV–V (G7–C–D) is the foundation of blues, country, and rock.

An inversion places a non-root note in the bass.

G7 root position: G in bass. First inversion: B in bass. Second inversion: D in bass. Inversions create smoother bass line movement without changing the harmony.

Remember the formula: 0–4–7–10 semitones from root.

For G7: start on G, add 4 semitones, then 7 semitones, then 10 semitones. Practicing this across all 12 roots builds instant recognition of any dominant 7th chord.