Am    C    Dm    Em  
e | ---0-----0----1-----0-----
B | ---1-----1----3-----0-----
G | ---0h2---0----2-----0-----  
D | ---0h2---2----0-----2-----  
A | ---0-----3----0-----2-----  
E | ---0----(3)---x-----0-----

Here's how they fit into the Verse and Chorus :

[VERSE]

Am           C   Am          C
  C'mon Billy,     Come to me
Am                    C       Dm   C   Dm C   Am
  You know I'm waiting,  I'll love you endlessly.
Am           C  Am                   C
  C'mon Billy,    you're the only one,
Am                          C       Dm  C    Dm C  Am
  Don't you think it's time now you met your on-ly son ?
Am          C   Am                C
  I remember      our lovers' play
Am                   C     Dm  C  Dm C   Am
  The corn was golden,  we lay in it for days
Am          C   Am                   C
  I remember      the things you said
Am               C         Dm C    Dm C     Dm
  My little Billy,    come to your lo-ver's bed

[CHORUS]
Dm          Am
  Come home,  is my plea
Em                Am
  Your home now is  here with me
Dm         Am
  Come home  to your son
Em
  Tomorrow might never come

[VERSE]

C'mon Billy, you look good to me

How many nights now your child inside ohh - v.unsure about this!

Don't forget me, I had your son

Damn thing went crazy, but I swear you're the only one

[INSTRUMENTAL] for rest of verse

Then just repeat :
Am                C  Am          C
  Come along Billy,    Come to Me

At? o final da m?sica.