As always, I strongly suggest listening to this track before watching my music theory analysis video (if you are not already familiar with it).
For your convenience, I have pulled the sheet music, chord charts, and any other especially salient diagrams from the analysis and posted them below.
1: Intro Chord quality alterations in a diatonic context.
2: Pre-Verse (1/2) Low-movement chord voicings, and chord functions which rely on mediant substitution.
3: Pre-Verse (2/2) Unusual secondary dominants, and modulation to an adjacent key.
4: Verse Return to previous key, and I7 subverted to return to Pre-Verse Chords.
5: Turnaround Heavy section with slash chords.
6: Outro (1/2) Return to Pre-Verse chords.
6: Outro (2/2) Subtle suggestion of E major key while retaining B major melody.