This is a compilation of other tabs IÕve seen and my own way of playing it. I think it matches quite well. 

Intro - Capo 1st Fret
|-------------3---3-3---3-3-3-3----------------2-----2-3-2-2(0)--------------|
|-------------0---0-0---0-0-0-0----------------3-----3-3-3-3(0)--------------|
|-------------0---0-0---0-0-0-0(2x)------------2-----2-2-2-2(0)--0---0-------|
|-------------0---0-0---0-0-0-0----------------0-----0---------2--0h2----0---|
|-----2-2-3-0-2---2-2---2-2-2-2---2-2-3-3-2-0--0-----0----------------0h2----|
|-3-3---------3---3-3---3-3-3-3----------------------------------------------|

|-----3-3---3-3-3-3----------------------------------------------------------|
|-----0-0---0-0-0-0----------------------------------------------------------|
|-----0-0---0-0-0-0----------------------------------------------------------|
|-----0-0---0-0-0-0----------------------------------------------------------|
|-----2-2---2-2-2-2----------------------------------------------------------|
|-3---3-3---3-3-3-3----------------------------------------------------------|

Verse:
By the rivers of [G]Babylon
Where he sat down
And there he [D]went
When he remembered [G]Zion
Over the wicked carry us away captivity
[C]Required from us this [G]song
How can we sing King Alfa's song in a [D]strange [G]land
So let the words of our [D]mouth and the medi[G]tation of our [D]heart
Be ac[G]ceptable in thy [D]sight
Over I [G]

Instrumental Break
|-------------3---3-3---3-3-3-3----------------2-----3p2-2-2---2-------------|
|-------------0---0-0---0-0-0-0----------------3-----3-3-3-3---3-------------|
|-------------0---0-0---0-0-0-0(2x)------------2---2-2-2-2-2---2----0--------|
|-------------0---0-0---0-0-0-0----0---0/2-0---0---0-----0-0---0-0h2----0----|
|-----2-2-3-0-2---2-2---2-2-2-2----2---2/3-2(0)0---0-----0-0---0-----0h2--0-2|
|-3-3---------3---3-3---3-3-3-3----------------------------------------------|

|-3-----3---3---3-3----------------------------------------------------------|
|-0-----0---0---0-0----------------------------------------------------------|
|-0-----0---0---0-0----------------------------------------------------------|
|-0-----0---0---0-0----------------------------------------------------------|
|-2-----2---2---2-2----------------------------------------------------------|
|-3-----3---3---3-3----------------------------------------------------------|

Final Verse:
By the rivers of [G]Babylon
Where he sat down
And there he [D]went
When he remembered [G]Zion
Over the wicked carry us away captivity
[C]Required from us this [G]song
How can we sing King Alfa's song in a [D]strange [G]land