I-V-IV (Three Chord Pop)
Sweet Home Alabama, Born This Way, All The Small Things. 3 chords. 0 minor.
I-V-IV is the purest rock: just 3 major chords, no minor chord (vi). Direct sound, no complications. Typical of stadium rock and the energetic pop of the 80s-2000s.
IVIVIV
Famous songs
Sweet Home Alabama (Lynyrd Skynyrd) · Born This Way (Lady Gaga) · All The Small Things (Blink 182)
Did you know?
By avoiding the vi (minor), I-V-IV sounds more direct and without melancholy. The IV after V creates a 'soft landing' effect very characteristic of American rock.