Intro part
 Fill 1
E|----------------------------------| --------|
B|-------------------------------------------|
G|--8h10---8--10-10~-8h10---8--10-10~--10-10-|
D|-------------------------------------------|
A|-------------------------------------------|
E|-------------------------------------------|
Fill 2
E|-----------------------------------------------------|
B|-----------------------------------------------------|
G|-----------------------------------------------------|
D|-8--8--8--8--8--8--8-10---10--10--10--10--10--10--10-|
A|-----------------------------------------------------|
E|-----------------------------------------------------|

These fills if you wish are not exact,
merely a template or guideline, 
so add extra C's and Bb's where it seems appropriate

Then played is a Bb5 chord and a C5 chord, 
which i think have the root on the A string

E|--------------------------------------------|
B|--------------------------------------------|
G|-3----3--3--3--3--3-5---5--5--5--5--5--5--5-|
D|-3----3--3--3--3--3-5---5--5--5--5--5--5--5-|
A|-1----1--1--1--1--1-3---3--3--3--3--3--3--3-|
E|--------------------------------------------|

And prehaps pick the chords like so sometimes..

E|--------------------------------|
B|--------------------------------|
G|-----3-----3---3-----5----5---5-|
D|-----------3---3----------5---5-|
A|--1-----1----1----3----3------3-|
E|--------------------------------|


And after a bit go back to fill 2, then... the dynamics

E|-----------------------------------------------|
B|-----------------------------------------------|
G|--10-10-10-xx--8--8--x-5--5-x--5-5-5--3--5--5--|
D|--10-10-10-xx--8--8--x-5--5-x--5-5-5--3--5--5--|
A|--8--8--8--xx--7--7--x-3--3-x--3-3-3--5--3--3--|
E|-----------------------------------------------|


Then through the singing its the same rythm as before
 but slightly more up strumed, with the Bb and the C but use these


E|-3--3-x-3--3-x--5--5-x-5--5--|
B|-3--3-x-3--3-x--5--5-x-5--5--|
G|-3--3-x-3--3-x--5--5-x-5--5--|
D|-3--3-x-3--3-x--5--5-x-5--5--|
A|-----------------------------|
E|-----------------------------|