[Let's Chop Cats!]

Grindcore in its purest form consisted of short, apocalyptic blasts of noise played on standard heavy metal instrumentation (distorted guitar, bass, drums). Although grindcore wasn't just randomly improvised, it certainly didn't follow conventional structure, either; while riffs could sometimes be picked out, pure grindcore never featured verses, choruses, or even melodies. Grindcore vocals sounded torturous, ranging from high-pitched shrieks to low, throat-shredding growls and barks; although the lyrics were usually quite verbose, they were very rarely intelligible. Some bands in this catagory can also be known as Mathcore. Meaning they're more complex in the musical writings.

Grindcore bands:
Napalm Death, Dillinger Escape Plan, Death, Carcass, The Locust, The Tony Danza Tap Dance Extravaganza