Tuned down a 1/2 step.

Come in after 1 line of the guitar riff.

Main Riff
Gb|---------------------------------------|
Db|---------------------------------------| (6x)
Ab|---------------------------------------|
Eb|8-7-7-0-0-0-0-8-8-7-7-0-0-0-0----------|

Chorus
Gb|---------------------------------------|
Db|---------------------------------------| (4x)
Ab|7-----9-----7-----10-----9---5---------|
Eb|--0-0---0-0---0-0----0-0---0---0-------|

(Main Riff 6x)

Gb|---------------------------------------|
Db|---------------------------------------| (x1)
Ab|7-7-7-----7-7-7-----7-7-7-----7-7------|
Eb|---------------------------------------|

(Main Riff 6x)
(Chorus Riff 4x)

Alteration to main riff here which follows the guitar:
Gb|--------------------------------------------------------|
Db|--------------------------------------------------------| (x1)
Ab|--------------------------------------------------------|
Eb|8-7-3-7-0-0-0-8-7-7-0-0-0-0-8-7-3-7-0-0-0-8-7-7-0-0-0-0-|


Gb|--------------------------------------|
Db|--------------------------------------| (x2)
Ab|--------------------------------------|
Eb|8-7-3-7-0-1-3-8-8-7-7-0-0-0-0---------|

**Alternatively an easier way for the above riff:
**Gb|------------------------------------|
**Db|------------------------------------| (x2)
**Ab|3-2---2-------3-3-2-2---------------|
**Eb|----3---0-1-3---------0-0-0-0-------|

Gb|----------------------------------------|
Db|----------------------------------------| (x4)
Ab|7-------7-------7-------7-------9---5---|
Eb|--0-0-0---0-0-0---0-0-0---0-0-0---0---0-|

(Main Riff x4)

That's it! An easy two-string song that rocks.