Theory
Common Chord Progressions
Chord progressions are sequences of chords that create the harmonic foundation of songs.
I-V-vi-IV (The Pop Progression)
In C major: C - G - Am - F
In G major: G - D - Em - C
Used in countless pop songs!
12-Bar Blues
I - I - I - I - IV - IV - I - I - V - IV - I - I
In A: A - A - A - A - D - D - A - A - E - D - A - A