Looking for names of songs...death metal, hard rock, etc.?

I need instrumentals only! I already looked up Slipknot, Mudvayne, Metallica, Disturbed, Static X, Adema, System of a Down, and a few others. I need to know of other bands similar to these listed above. Also, If anyone knows the names of instrumental tracks that are similar, that would be great! Thank you.
Update: ***Thanks to all who've answered so far. But I want to be clear that these songs can have NO VOCALS. And they need to be super fast death metal type stuff. Loud, heavy metal, clean, instrumental...
8 answers 8