This song is by Tab Benoit. He wrote the music and lyrics to the song (just in case 
wondering if it's a cover or not). This is all MY work. I haven't quite figured out the 
but they were improvised anyway. The key of the song is A minor.

The whole song is basically done like this:

(Verse riff)
e----------------------|
B----------------------|
G----------------------|
D-2-2-2-2-2-2--------2-|
A-0-0-3-3-0-0--------0-|
E-------------0-0-3-0--|

Repeat that until the chorus comes. When it does, play this (once):

(Chorus riff)
e-----------------|
B-----------------|
G-----------------|
D---------------2-|
A-/7-5/3----5-3-0-|
E--------5-3------|

In the second and fourth verses, he plays this right before the chorus:

e-0-
B-8-
G-9-
D---
A---
E---

Play that for a bar, and then play the chorus riff.

That's all that you need to know. Hard to believe, isn't it? I'm glad that you've taken 
time to read this TAB because that would mean that you've actually heard of this guy.

Here is his official website right here, if you would like to read up on him, any of his 
albums, or tour dates and things of that nature:
http://www.tabbenoit.com/