G Major Scale

G - A - B - C - D - E - F# - G
Key Signature: G major has one sharp: F#. This means that whenever an F note appears in the key
Relative Minor: The relative minor of G major is E minor. Both keys share the same key signature but have different tonal centres.

The G major scale consists of the following notes: G - A - B - C - D - E - F# - G

The scale follows the major scale formula: Whole - Whole - Half - Whole - Whole - Whole - Half
(Where "Whole" = whole step and "Half" = half step)

G to A: Whole step
A to B: Whole step
B to C: Half step
C to D: Whole step
D to E: Whole step
E to F#: Whole step
F# to G: Half step
Chords in G Major

The chords in the key of G major are built from the scale, following the pattern of major (M), minor (m), and diminished (dim):

G major (I): G - B - D
A minor (ii): A - C - E
B minor (iii): B - D - F#
C major (IV): C - E - G
D major (V): D - F# - A
E minor (vi): E - G - B
F# diminished (vii°): F# - A - C

Some common chord progressions in G major are:
I - IV - V - I: G - C - D - G
vi - IV - I - V: Em - C - G - D (popular in pop music)
ii - V - I: Am - D - G (used in jazz and classical music)