I only play the piano and just a little guitar;these are the chords I use.
For the C7/G this is my best attempt if it's not the sound you're looking for just use the "C7"


Key: A Major                        e----o-----|
                                    B----1-----|
Intro: Ab C7 C# E x2          C7/G  G----0-----|
                                    D----2-----| 
                                    A----1-----|
                                    E----3-----|


Ab          C7/G C#
   All alone, 
               E           Ab
It was always there you see.
                   C7/G C#
And even on my own, 
                        E     Eb 
It was always standing next to me.
              F#                         C#
I can see it coming from the edge of the room.
                  C#        Eb
Creeping in the streetlight.
            Gd               C#
Holding my hand in the pale gloom.
                 Bb       
Can you see it coming now?



Ab   C7  C# 
  AAAaaaaAAhhh... 
             C#m 
I think I'm breaking down again... 
Ab   C7  C#
  AAAaaaaAAhhh... 
            C#m
I think I'm breaking down... 



Ab          C7/G C#
  All aloooone, 
             E         Ab
Even when I was a child, 
                 C7/G C#
I've always knoooown, 
                    E    Eb
There was something to be frightened of.
                  F#                          C#
And I can see it coming from the edge of the room.
                   C#       Eb
Creeping in the streetlight.
            F#                  C#
Holding my hand in the pale gloom.
                Bb
Can you see it coming now?



Ab   C7  C# 
  AAAaaaaAAhhh... 
             C#m 
I think I'm breaking down again... 
Ab   C7  C#
  AAAaaaaAAhhh... 
            C#m
I think I'm breaking down...

Ab          C7 C#
  All alone, 
        E           Ab
On the edge of sleep, 
                  C7  C# 
My old familiar friend
            E              Eb
Comes and lies down next to me.
                  F#                         C#
And I can see it coming from the edge of the room.
                  C#       Eb
Smiling in the streetlight.
              F#             C#
Even with my eyes shut tight, 
                 Bb
I still see you coming now.

Ab   C7  C# 
  AAAaaaaAAhhh... 
             C#m 
I think I'm breaking down again... 
Ab   C7  C#
  AAAaaaaAAhhh... 
             C#m 
I think I'm breaking down again... 
Ab   C7  C#
  AAAaaaaAAhhh... 
             C#m 
I think I'm breaking down again... 
Ab   C7  C#   
  AAAaaaaAAhhh... 
            C#m
I think I'm breaking down...