All progressions

I IV V in G: G, C, D

Their roots are the first, fourth and fifth notes of the G major scale. G, C and D are major chords.

1. G

   I

   G B D

   Open in Keyriff

2. C

   IV

   C E G

   Open in Keyriff

3. D

   V

   D F# A

   Open in Keyriff

I IV V in other keys

• C
• Db
• D
• Eb
• E
• F
• F#
• Ab
• A
• Bb
• B