Wolves! (of Greece)
Imagine buying a Captain Beefheart record, playing it at 45 instead of 33, recording that, and then playing that at double speed really fucking loud with lots of screaming over the top. They're a massively enjoyable experience all the more so for the obvious delight they take in their aural assault. Simon the singer manages to wipe out half the drum kit after the first bar and they only slow it down once in the set to play a song that sounds like Black Sabbath trying to play something by Conflict and giving up halfway through to go doom. Steve the drummer has been doing this for years (in Heresy) and keeps the beat feeling good even when playing faster than you can see!