Under Your Wings I'll Hide is not the ideal song for a lone guitar, when so much 
happening at the same time. But this could be used as a good start for you who like to improvise.
    There is a melody in the chord A with A, Asus, Asus2, A. But you would need to 
listen to the song to make it easier for you.
( http://www.youtube.com/watch?v=UFQ0dCSYubQ )
 Good luck!

A*

       A    A9   A   Asus A
Fire haunts us, holds us now.
A                       Asus2    A   Asus  A
Bright eyes still, hides us,   takes  us  now.
A
Still spins us wild

A*      Improvise through the chord.

A     E     F#m

D         E   F#m    A
  Sweet voice calls us
      D     E    F#m  A   (Asus  
Asus2  Asus  A)
When black face chase us

F#m    E

D
Come to me, hide in me
F#m          E
   Run into this
D               A
Storms fear us here

A*

F#m    E    D (/A)    x2

A
Aaaa...

A
Fire...
F#m         E        D      /A
Haunts us, holds us now.
F#m         E        D
Breaks us, takes us now.

A

F#m      E

D                     F#m    E
  White tears call us.
      D
With fire, holds us down.

A*

A             A*
They take us now


A    (/B        /C# /D /E   /D 
/C# /B /A)
Under your wings I'll hide                x2

A


It's a bit messy at the end of the song. But the base-tones in the parentheses is a tip 
if you want something to happen at the end...

www.immanu-el.com