This is my first tab.  My Favorite Song by David Gray.  Super easy to sing along too.  I 
charted out the whole thing, but in general, you are usually playing one of the two progressions:

G, D, C, Am
Em, D, C, Am

For variety, go ahead and switch the order of C and Am every now and then.

Cap on 1st Fret

GCome (320003@1)on, come on, come on
			Dcome (xx0232@1)on, come on, come on
CCome (x32010@1)on, come on, come on
			Amcome (x02210@1)on, come on, come on

GThe (320003@1)stolen glances, broken threads
      DThe (xx0232@1)visions looming in our heads
      CThe (x32010@1)years spent running parallel
     AmTo (x02210@1)everything that might of been
    GNo (320003@1)longer possible to hide
    DThe (xx0232@1)feeling welling up inside
      CAin't (x32010@1)never been this close before
            AmAin't (x02210@1)never felt so far away

GWhen (320003@1)a moment
  DA (xx0232@1)moment changes everything
       CWhen (x32010@1)a moment
  AmA (x02210@1)moment changes everything
       G (320003@1)  D (xx0232@1)          CWhen (x32010@1)a moment, it changes everything

GThe (320003@1)summer sky is blushing pink
      DThe (xx0232@1)heart is running out of sync
      CCould (x32010@1)this just be the day, I think
      AmWhen (x02210@1)anything is possible
      GWell, (320003@1)hey now you've been here before
   DTo (xx0232@1)see your face and slam the door
    CAnd (x32010@1)waiting for the floor to drop
 AmFeel (x02210@1)like time is standing still

GWhen (320003@1)a moment
   DA (xx0232@1)moment changes everything
       CWhen (x32010@1)a moment
   AmA (x02210@1)moment changes everything
       GWhen (320003@1)a moment
    DA (xx0232@1)moment changes everything
       CWhen (x32010@1)a moment
  AmA (x02210@1)moment changes everything
        Em (022000@1)  D (xx0232@1)      CWhen (x32010@1)a moment, it changes everything

GCome (320003@1)on, come on, come on
			Dcome (xx0232@1)on, come on, come on
CCome (x32010@1)on, come on, come on
			Amcome (x02210@1)on, come on, come on

GCome (320003@1)on, come on, come on
			Dcome (xx0232@1)on, come on, come on
CCome (x32010@1)on, come on, come on
			Amcome (x02210@1)on, come on, come on

Em (022000@1)       DA (xx0232@1)moment, a moment changes everything
   C (x32010@1)        AmA (x02210@1)moment, a moment changes everything
   Em (022000@1)       DA (xx0232@1)moment, a moment changes everything
   C (x32010@1)       AmA (x02210@1)moment, a moment changes everything

Em (022000@1)      DThen (xx0232@1)moment, a moment changes everything
  C (x32010@1)               Am (x02210@1)	EmA (022000@1)moment