The start has a little riff which is:

E  | ------------------------------- | 
B  | ------------------------------- | 
G  | -(b9)--11-6---4-(b9)--------------- | 
D  | ------------------------------- | 
A  | ------------------------------- | 
E  | ------------------------------- | 

The chords for the intro/ verse are:

       E *        C#m

E  | ----7----------4--------------- | 
B  | ----(b9)---------5--------------- | 
G  | ----8----------6--------------- | 
D  | ----(b9)---------6--------------- | 
A  | ----7----------4--------------- | 
E  | ----x----------x--------------- | 


VERSE

E *
Summer's changing baby,
C#m                       E *
All the light is changing too,
      C#m
Can?t you see?
E *                        C#m                 E *
Feels like all the colours of emotion shine on through,
        C#m
Even if we try,

PRE-CHORUS


        F#m
E  | -----2------- | 
B  | -----2------- | 
G  | -----2------- | 
D  | -----4------- | 
A  | -----4------- | 
E  | -----2------- | 


                F#m                       B
Ooh, it gets me high drifting through the light,
                   F#m
Endless miles I?ll drive,
                  B
Trying to make it right.


CHORUS

                  A   E               B
I keep on holding on, waiting for the sun,
                  A   E               B
I keep on holding on, waiting for the light,
                  A   E               B
I keep on holding on, waiting for the sun,
                  A   E         B
I keep on holding on, yeah, yeah, yeah,
E *
ooh, ooh.

Then just repeat, you should get the hang of it, its only got 3 chordal parts.