The fact that Zach Hill is in a heavy rap group is kind of blowing my mind right now. Death Grips hails from Northern California and just dropped their debut mixtape, Exmilitary. The group is intended as a "broadcast system," though PBS doesn't do it quite like this. None of the members have specific roles and each contribute different aspects to different song, so it's hard to tell you who is doing what. The one thing for certain is that the collective mind of Death Grips creates some amazing beats. It's also worth noting that this is probably as much punk as it is rap.
Death Grips - Takyon (Death Yon)
Death Grips - Klink
Exmilitary is available now, for free.