The key of G Major mostly uses the notes of the G Major Scale, which are G, A, B, C, D, E, and F♯. The key signature has one sharp, F♯, and its relative minor key is E minor.

The G Major Key Signature

Famous songs in the key of G Major include Sweet Home Alabama, Knockin’ On Heaven’s Door and Eine Kleine Nachtmusik.

G Major Diatonic Chords

The G Major key uses the scale degree chords of the G major scale, which are G, Am, Bm, C, D, Em, and F#mb5.

I ii iii IV V vi vii°
G Am Bm CD Em F#mb5

G Major Cadences

An easy way to find out if a song is in the G Major key is to look for cadences. A cadence is a melodic or chord progression that moves towards a point of rest or resolution and is the most common way to define a key.

Classical Cadence:

  • Intervals: IV – V – I
  • Chords: C – D – G

Jazz Cadence:

  • Intervals: ii – V – I
  • Chords: Am – D – G