G Dominant 7th
Introduction
Notes
G Dominant 7th Inversions
| Position | Notes |
|---|---|
| Root Position | G4 – B4 – D5 – F5 |
| 1st Inversion | B4 – D5 – F5 – G5 |
| 2nd Inversion | D5 – F5 – G5 – B5 |
| 3rd Inversion | G4 – B4 – D5 – F4 |
Key Signature
The key of G Dominant 7th has 1 sharp: F♯.
Theory: Intervals
The G Dominant 7th is built by stacking intervals from the root note. The formula R-M3-P5-m7 describes the scale degrees used. The intervals P1-M3-P5-m7 show the distance between each note in the chord.
G Dominant 7th — Frequently Asked Questions
What notes are in the G Dominant 7th chord?
The G Dominant 7th chord (G7) contains four notes: G (root), B (major third), D (perfect fifth), and F (minor seventh). The major triad with a minor seventh creates the dominant 7th's characteristic drive and tension.
How does G Dominant 7th differ from G Major?
G Major contains three notes: G, B, D. G Dominant 7th adds an F (minor seventh) on top. That single note transforms a stable chord into one that urgently wants to resolve — typically down a fifth to C Major, the most common resolution in all of Western music.
What does 'dominant' mean in music theory?
'Dominant' refers to the fifth scale degree. G7 is the dominant chord in C Major — the most common key in music. The G7 to C Major resolution (V7–I) is the single most important chord movement in Western harmony.
How is G Dominant 7th used in music?
G7 resolves to C Major in the V7–I cadence that ends countless songs, hymns, and classical pieces. It is the V7 in C Major, the most common key in popular music. G7 also appears as the I chord in blues in G and as a secondary dominant in many other keys.
What songs use dominant 7th chords?
Dominant 7th chords are the backbone of blues and early rock: every chord in a standard 12-bar blues is a dominant 7th. Hit the Road Jack (Ray Charles), Ain't Misbehavin' (Fats Waller), and countless jazz standards rely on dominant 7th movement for their harmonic drive.
What is the tritone in G Dominant 7th?
The tritone in G7 is the interval between B (the third) and F (the seventh) — exactly 6 semitones apart. This is the most famous tritone in music education and gives G7 its powerful pull toward C. The B resolves up to C and the F resolves down to E.
Practice Tips
- Play G Major then add F — hear the instant transformation from stability to motion. G7 is the most commonly heard dominant 7th chord in music.
- The tritone between B and F is the most famous in music theory. Play just those two notes, then resolve: B up to C, F down to E. This is the V7–I voice leading that defines Western harmony.
- Practice G7 → C Major until it is completely automatic in every inversion. This is the single most important chord resolution in music — it should feel effortless.
- In a 12-bar blues in C: C7–C7–C7–C7–F7–F7–C7–C7–G7–F7–C7–G7. G7 is the turnaround chord that sends you back to the top.
- Compare G7 with Gm7 — the major third (B) in G7 creates brightness and urgency, while the minor third in Gm7 produces a smoother, jazzier quality.
- Rootless voicing: play B–D–F without the G — this three-note voicing is the standard jazz piano approach. Add it to your comping vocabulary.