My First Tab :) Thanks to the original writer of this tab.
It's an edited version that I feel sounds better.
Sorry for mistakes. I'm still new at this.

System of a Down - ATWA 
Intro
|F|-------------------------------------------
|C|-5--5-3--3-7--7-8--8-10--10-8--8-7--7-5--5-
|G|------------------------------------------- 4 times
|C|-------------------------------------------

Chorus
|F|-------------------------------------------
|C|------------------------------------------- 
|G|------------------------------------------- 2 times
|C|555555-555555-555555-555555----------------

Verse 2 
|F|-------------------------------------------
|C|------------------------------------------- 
|G|-5--5-3--3-7--7-8--8-10--10-8--8-7--7-5--5- 3 times
|C|-------------------------------------------

Chorus
|F|-------------------------------------------
|C|------------------------------------------- 
|G|------------------------------------------- 2 times
|C|555555-555555-555555-555555----------------

After Chorus
|F|-------------------------------------------
|C|------------------------------------------- 
|G|------------------------------------------- 
|G|5-5-5-56-5-5-5-56-5-5-5-56-5-5-5-56--------

1:52
|F|-------------------------------------------
|C|------------------------------------------- 
|G|------------------------------------------- 
|C|-5--5-7--7-8--8-10--10-8--8-7--7-5--5------

2:02
|F|-------------------------------------------
|C|------------------------------------------- 
|G|-------------------------------------------
|C|-5-3--7-7--8-8--10-10--8-8--7-7--5-5-------

2:12

|F|-------------------------------------------
|C|------------------------------------------- 
|G|------------------------------------------- 2 times
|C|5--5-3--3-7--7-8--8-10--10-8--8-7--7-3-----

Chorus
|F|-------------------------------------------
|G|------------------------------------------- 
|C|------------------------------------------- 2 times
|C|555555-555555-555555-555555----------------

After Chorus



|F|-------------------------------------------
|G|------------------------------------------- 
|C|------------------------------------------- 
|G|5-5-5-56-5-5-5-56-5-5-5-56-5-5-5-56--------