The piano melody of this song goes: 
C G C D E 
Bm F# B C# D 
G E G A B 
Em B E F# G 
D A D E F# 
C G C D   E 
 
Every chord is followed by its 5th in the lower octave, 
then the key itself, the 2nd and 3rd (or 3rd minor), 
which are all shown above 

 Artist: Moby
Title: 18
Album: 18
Tabbed by: Gabo (i_am_dios@yahoo.com)

Play the chord, and then the notes of the chord separately, then the other chord.
For example: play Am (chord), then A E C E A C E C , then G (chord).

The chords are:
Am G Em D
All through the song