Can anyone show me some bands with gattling gun like double pedals, or quad pedals?
If you're also looking for a band with extreme pedals.
http://www.youtube.com/watch?v=c5_LoELhwHE
And what's your opinion on slamming deathmetal, such as Pathology, Abominable Putridity, Ingested, Devourement, so on?
There are some songs by dragonforce for example Reasons to Live
Behemoth - At The Left Hand Ov God
http://www.youtube.com/watch?v=TSkiT1Ypjcs
Check out George Kollias from a band called Nile.
http://www.youtube.com/watch?v=RqzZmNqdWck
http://youtu.be/Mnxm1qh_1rw?t=2m20s
http://www.youtube.com/watch?v=GLCc8zy3Pn8
Strapping Young Lad has always been pretty heavy on the double bass.
http://www.youtube.com/watch?v=BW9WUCJSK1E