( If you don't want to know about the last track, don't click here )

Its as simple as this:

http://kotaku.com/gaming/clips/dragonforces-guitar-hero-iii-finger-mangler-286084.php
And yes, those are alternating notes, not chords.

[EDIT]
And note that this is only the chorus+verses (the skip is the cutting out of the solo).

Piccy of the drum kit for rock band