MORE IGAB CRACK
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So it turns out that IGAB is actually better if you remove even the little bits of transition attempted in the original, which just sap momentum and gives the listener time to think about how ridiculous the changes are. This way, you're clinging to the ride the whole way through and have to take the thing in as a whole and not as its parts, it's a much more fun ride without brakes.
I also removed the worst of the try-hard bits: the sing-rap bits of the verse and the YoonHyo rap. You're welcome.