B|---------------------------------|---------------------------------|
G|---------------------------------|---------------------------------|
D|---------------------------------|---------------------------------|
A|---------------------------------|---------------------------------|
E|---------------------------------|---------------------------------|
   ^ ^ ^ ^ ^                        P.M..............................
after the palm muted part Gtr.1 
harmonizes with the first riff  

 Gtr.2                           x1                                 
E|---------------------------------|---------------------------------|
B|---------------------------------|---------------------------------|
G|---------------------------------|---------------------------------|
D|-----9---10--7-9---5-----7---4-5-|-----9---10--7-9---5-----7---4-5-|
A|-----9---10--7-9---5-----7---4-5-|-----9---10--7-9---5-----7---4-5-|
E|-0-0-7-0-8-0-5-7-0-3-0-0-5-0-2-3-|-0-0-7-0-8-0-5-7-0-3-0-0-5-0-2-3-|
  P.M..............................     
  ^ ^ ^ ^
this comes in when gtr.1 is starting 
the second palm muted riff 

E|-0-0-2-3-----------------------|
B|---------2-3-------------------|
G|-------------2-3---------------|
D|-----------------2-3---------2-|
A|---------------------2-3-----2-|
E|-------------------------2-3-0-|

                                                                     x???  
E|--------------------------------------------------------------------|
B|--------------------------------------------------------------------|
G|--------------------------------------------------------------------|
D|------------------7------------------7------------------7-7-7-7-7/8-|
A|------------------5------------------5------------------5-5-5-5-5/6-|
E|-0000000000000000---0000000000000000---0000000000000000-------------|