*Hi, This song was originally written by John Newton in 1779
But this version is ordinary sung a capella and is performed and transposed by Judy Collins.

(scuse my english i'm french ^^')

You can play it on guitar with the guitar tuned a half step below standard
 tuning. Or play with barred and so play the chords a semitone below

So, without special tuning and with barred, the chords become:
E => Eb
A => Ab
B7 => Bb7

 E                 A         E
Amazing Grace, how sweet the sound,
                         B7
That saved a wretch like me.
  E                 A      E
I once was lost but now am found,
               B7    E
Was blind, but now I see.

E                          A        E
T'was Grace that taught my heart to fear.
                      B7
And Grace, my fears relieved.
    E                 A       E
How precious did that Grace appear
           B7      E
The hour I first believed.

E                     A         E
Through many dangers, toils and snares
               B7
I have already come;
     E                     A         E
'Tis Grace that brought me safe thus far
               B7      E
and Grace will lead me home.

    E                 A       E
The Lord has promised good to me.
                   B7
His word my hope secures.
   E                  A       E
He will my shield and portion be,
           B7     E
As long as life endures.

E                        A           E
Yea, when this flesh and heart shall fail,
                      B7
And mortal life shall cease,
  E                 A      E      
I shall possess within the veil,
          B7      E
A life of joy and peace.

E                        A        E
When we've been here ten thousand years
                      B7
Bright shining as the sun.
E                     A          E
We've no less days to sing God's praise
                B7      E
Than when we've first begun.

Enjoy :)