The song begins with an E chord in the base position and merely emphasises the change from an open 'B; string to a C then to a C# and back down to B again.  While the fingering needed to accomplish this seemingly simple chromatic scale might be a bit awkward at first, keep trying.  You'll get it!  The rest of the song is fairly straight forward.
 
All chord notation  by Don Calderalo
Words and Music by Al Stewart
 

E(B)        E(C)   E(C#)   E(C)
This is the Mona  Lisa    talking
 
E(B)          E(C)      E(C#)     E(C)
Out on the street where love goes walking
 
Amaj7
Into the shadows that can't hide you
 
F#maj7
Here is a voice that speaks inside you
 

   E             C#m          E            C#m
Go home, pretty baby, go on home, pretty baby
 
            A                      B
You will go home to the one who is waiting for you
 
   G#7                      C#m
Anything that you want, anything that you do
 
            A                      B                 E with B-C-C# riff
You will go home to the one who is waiting alone for you
 
 
 
(Second verse, same as the first!)
 
 
 
         B A                          E
Oh, I know you think you're part of a tragic song
 
         B                A   G#m7                Bsus
You can show reasons it's over, but I know you're wrong
 

      E(B)        E(C)        E(C#)        E(C)
These Renaissance girls know what they're saying
 
           E(B)        E(C)        E(C#)        E(C)
There are whispers at night in the halls of paintings
 
Amaj7
You think you're the first to come untethered
 
F#maj7
But we've been watching you forever.
 

Go home....