Oxygen Bass Tab

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This might not be exact, but its close as dammit and will give you a good idea of whats going on.
Standard tuning.

Intro
G:---------------------|
D:-7-7-7-7-7-7-7-7-7-7-|
A:---------------------|
E:5-5-5-5-5-5-5-5-5-5--|
Do this for aslong as needed

Verse/Main Riff

G:---------------------------------|
D:---------------------------8-8-8-|
A:---------------------------------|   (Repeat as needed)
E:555-555-555-666-555-555-555------|

G:------------------------------------|
D:------------------------------------|
A:---------------------------55443322-|
E:555-555-555-666-555-555-555---------|

Chorus's

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

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

Like i said, its not 100%
Hope this works for you :)

Rusty