D   'Em'

x    7
7    7
7    0
0    x
x    x
x    x

It's not strictly Em then, but the bass is playing an E and there's so much reverb you 
really tell either way.  She also doesn't play the 'riff' over it, but if you want a go 
playing it solo (chords and 'lead') I suggest:

Capo 5

Chords relative to capo...

D*  D   Em* Em

4   2   0   2
2   2   3   3
2   2   4   4
2   2   4   4
0   0   2   2
x   x   x   x

I think that's right anyway.  Enjoy...

Lyrics?

I went for a walk
watched the cars go by
the sun was high
I thought of you

I went for a walk
the wind was blowin'
it sure was hot
I thought of you

I went for a walk
watched the cars go by
the sun was high
and so was I
I thought of you