Based off already posted tabs, 
just a basic structure and definitely not 100% perfect

tuning; down a whole step.
e-B-G-D-A-D (standard)
d-A-F-C-G-D (down whole step)



INTRO:

Gd|-------------------------------------------------|| (320003@1)A|-------------------------------------------------||
F|----0---0---0---0-------0-------0----------0-----||
C|--------------------0-------0-------0h2~------0--||
G|-------------------------------------------------||
D|--3---3---3---3---3---3---3---3---3------3---3---||



VERSES:
    Gd|-------------------------------------------------| (320003@1)A|-------------------------------------------------|
F|----0-------0-------0-------0-------0-------0----|    listen when to 
C|--------0-------0-------0-------0-------0-------0| ---pick this every
G|-------------------------------------------------|    now and then, not
D|--3---3---3---3---3---3---3---3---3---3---3---3--|    every time!
...cold is the water..           ..it freezes your..



Cd|-------------------------------------------------| (x32010@1)A|-------------------------------------------------|
F|----0---0---0---0---0---0---0---0---0---0---0---0|
C|-------------------------------------------------|
G|--3---3---3---3---3---3---3---3---3---3---3---3--|
D|-------------------------------------------------|
..already cold mind.          ..already cold, cold..



Gd|-------------------------------------------------|| (320003@1)A|----------------0h2--2p0-------------------------||
F|----0-------0------0----0------0------0--------0-||    
C|--------0------------------0-------0-------0-----|| 
G|-------------------------------------------------||    
D|--3---3---3---3-----3----3---3---3---3---3---3---||    
...cold mind..



CHORUS:

D (xx0232@1)              C (x32010@1)             Gd|-------------------------------------------------| (320003@1)A|-------2----------------1------------------------|
F|---3-------3---0----0-------0---0-----0-----0----|
C|-----0-------0--------2-------2----0-----0-----0-|
G|-0-------0--------3-------3----------------------|
D|----------------------------------3--3--3--3--3--|
..But you are not  alone in this..

C (x32010@1)              Em (022000@1)             Gd|-------------------------------------------------| (320003@1)A|-------1----------------0------------------------|
F|---0-------0---0----0-------0---0-----0-----0----|
C|-----2-------2--------2-------2----0-----0-----0-|
G|-3-------3---------------------------------------|
D|-------------------0------0------3--3--3--3--3---|
..But you are not  alone in this..



C (x32010@1)              Dsus4 (xx0233@1)             G (320003@1)     Emd|-----------------------------------------------0~| (022000@1)A|-------1----------------3----------------------0~|
F|---0-------0---0----0-------0---0-----0-----0--0~|
C|-----2-------2--------4-------4----0-----0-----2~|
G|-3-------3---------5------5--------------------2~|
D|-------------------------------3--3--3--3--3---0~|
..as brothers we will stand and we'll hold your hand..

Em (022000@1)       G (320003@1)d|-------------------------------------------------||
A|---------------------------------0h1---1p0-------||
F|--0------0-------0-------0----------0-----0------||
C|-----0-------0-------0-------0----------------0--||
G|-------------------------------------------------||
D|-0--0--0---3---3---3---3---3---3-----3------3---3||
..hold your hand..



When playing the chorus for the second time; play A as an open
string instead of playing the C string open the first time,
it's a bit fiddly but if you listen you can hear it.

When it comes to end of the chorus before the bridge,
keep repeating the G picking pattern and make the transition
into strumming (listen to song for correct timing)

BRIDGE:
    C (x32010@1)name="chord_xx0233@1">Dsus4 Em (022000@1) C (x32010@1)  Gd|----------------------| (320003@1)A|--1--3----0----1----0-|
F|--0--0----0----0----0-|
C|--2--4----5----2----0-|
G|--3--5----7----3----2-|
D|--3--5----7----3----3-|

CDsu4 (x32010@1) Em (022000@1) C (x32010@1)  GAnd (320003@1)I will tell the night

C (x32010@1)  Dsus4 (xx0233@1) Em (022000@1) C (x32010@1)  GWhis-per: (320003@1)  "Lose your sight"

C (x32010@1)name="chord_xx0233@1">Dsus4  Em (022000@1) C (x32010@1) G (320003@1)   C~         G(single (320003@1)strum) 
But I can't  move the moun-tains for you
                      ^     ^
                  NOTE: single strum
                     this G& (320003@1)C (x32010@1)end on:
d|-3~---|
A|-3~---|
F|-0~---|
C|-0~---|
G|-2~---|
D|-3~---|