MS Paint aficionado scorpiongold (his YouTube account name) spent four years creating this "masterpiece". At 2.5m x 2.3m, it's more than a mere painting - it's an entire world, filled with fanciful whimsy and magical characters. Did I mention it took four years?
As for the hairband soundtrack? Well, like all hairband music, it's a bit older than four years. And yet, it's oddly fitting given the circumstances. Interpret the "insane" however you want in this case.