I found the melody for the whistling submitted by cameron.aerts....its perfect
------------------------------------------------------------------------------------------------
The Melody to the Whistling part is:
e ------0--4--2--0-----0--4--2--0-------0--4--2--0-------------------------|
B ---2----------------0----------------2------------------0----------------|
G -------------------------------------------------------------------------|
D -------------------------------------------------------------------------|
A -------------------------------------------------------------------------|
E -------------------------------------------------------------------------|
however i needed to change up the chords.....they didn't sound right to me, so here's my version. 
So lets go
E
Watching the sand fall
A
Gets you nothing
E
Like the hands on the clock wall
B                        E
Oh I love it when you’re standing up so tall
C#m                     E         A B
And all you are is all aglow
E
Here we are in our own space
A
And I believe in
E
Every bright smile that I’ve faced
A
Keep’em coming
             E
‘Cause I’m feeling the same way
A                    E      A B
Turn it on and off we go
Chorus:
C#m
We’ll run till we fall
A
And the closing bell’s calling
E                      B
We’re only here for so long
     C#m
We lead and we follow
   A
Tonight till tomorrow
E                          B
We go and we go till we’re gone
        A   E        C#m   B
So Lets Go.....So Lets Go
        A   E        C#m    B
So Lets Go.....So Lets Go
E  C#m   B    E