In Exercise 3, we'll be playing a brief chord progression before the song transitions to a tempo increase in Exercise 4.
We'll start off strumming the D power chord, then in bar 18 we'll play the A and G# chords along with the drums as we descend to the F# chord in bar 19.
Also, in bar 20, make sure you apply some seriously chunky palm muting as you accent along with the drums.