here is a easier version

Intro: F#m

F#m7            D                  A
What if I could change the path of time?
                  Esus4      F#m
What if I had the power to decide?
F#m7            D          A
What if I could make us unify?
   Esus4 F#m
If I, if I?

What if we would open up the doors?
What if we could help each other more?
What if I could make you all believe?
   Esus4  Dadd9
If we, if we?

Chorus:
                A              C#m7
     What if we all opened our arms?
                F#m    D          E/G# 
     What if we came together as one?
     E             A                  E
     What if we aimed to stop the alarms?
     C#m        F#m      D          E 
     What if we chose to bury our guns?

   E            D                   Esus4
   Why don?t we always reach out to those
                   A
   Who need us the most?

Together we can change the path of time,
Together we have power to decide.
The answer lies within our hearts and minds
Together, together.

  F#m7          D             A
Together we can make a better place
               Esus4         F#m
On this little island out in space.
  F#m7          D                    A
Together we can change the world forever.

Chorus:
     E          A              C#m7
     What if we all opened our arms?
                F#m    D            E/G# 
     What if we came together as one?
     E             A                  E
     What if we aimed to stop the alarms?
     C#m        F#m      D           E 
     What if we chose to bury our guns?

D
Let?s unite and make a change,
F#m             E
Let?s unite and write a new page,
D
Come on sinners, come on saints,
F#m
Have faith!

   E            D                   E
   Why don?t we always reach out to those?

Chorus:
                C              Em7
     What if we all opened our arms?
     Em         Am     F            G/B 
     What if we came together as one?
     G             C                 G
     What if we aimed to stop the alarms?
     Em         Am       F          G 
     What if we chose to bury our guns?

   G            F                   G
   Why don?t we always reach out to those
                   Ab Bb  C
   Who need us the most?