In the instrumental section the chords map to the hits. It'll make sense if you listen and look at the chords. Also, the chorus is stripped down a bit- watch for it.
Phrase: prechorus
Progression: f#m f#m f#m A g#m f#m f#m g#m f#m
Phrase: chorus
Progression: E
Phrase: verse
Progression: E A
Phrase: instrumental
Progression: f#m f#m f#m A g#m f#m f#m g#m f#m E A E A