The chords used in the quiet piano section of this song are basically the same as the guitar chords (see the guitar riff for this song.)
The addition is the use of suspended 2nd chords, which makes the progression sound typically pianistic. Sus2 chords are formed by taking the major chord
(in this case D major) and 'suspending' the middle note by holding it down a town - in this case it plays an E. In the second of these, the effect can be seen as a way of moving between the notes
of the D major to the notes of the A major.
Lyrics
So much for my happy ending ohh, ohh, ohh, ohh, ohh, ohh, ohhhh
Let's talk this over It's not like we're dead Wa...
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