Theorema

Note: This band changed their name to Apterous. There is also an Italian techno act by this name.
From the Dark, Cold Northern part of the Netherlands, the capital of the underworld, home of the most recognised tower in the world, the Martini Tower, Theorema comes from Groningen.
Playing a genre named Blackened Death Thrash, Theorema incorporates all sorts of Black, Death and Thrash metal into one big pile of crap. And you love it.
Well, maybe now you don't. But one day, you will!