Fear Factory

Fear Factory is a sick band if you are into heavy death metal music. Their aggressive style involves precise guitar timing. On their Obsolete and Archetype albums, they do a lot of "running" or "chugging" on the bottom string. This sound creates a train effect, where the music is constantly moving with abrupt changes at random times.

Their vocals are very powerful too. The lead singer sings and growls to produce a unique sound above all the low-pitch chaos.

Also, the double bass drum sounds really cool. This drummer is really fast and has good chemistry with the guitars.

The bass guitar is strong and creates a warm tone to their music.  This deep low-end tone pulls their tracks together well.

Overall, these guys are great when you are in the mood for an aggressive sound. You should check them out if you are into death metal music.