Y'know, I was wondering where you got the melody for that song from, I knew it was familiar but couldn't place it. I had the nicovideo on loop for an hour or two that one day you linked this in #iji a while back. :V
And I honestly I absolutely love the unstable melody here. It sorta oscillates around a rough pseudo-theme, which is enough to give it a sense of cohesion. It's a really interesting and fun song to listen to.