However, that mystery is dwarfed by the fact that the opening bands were also a very different style of music than the headlining band. Sure, in a really broad sense the locals and the headliner might both be categorized as "metal," but the locals all played very generic and slow metalcore. See You Next Tuesday plays very fast, experimental grindcore. The way this played out was that I was quite bored for the first three bands and then finally had a good time when See You Next Tuesday got on stage.
I always thought opening bands were supposed to get the crowd excited and energized. I have yet to go to a concert in Michigan where the opening acts actually do that. Then again, maybe that's an Indiana thing.