Ok, so sorry for the super late reply. On the off chance that you're still looking for closure here, or at the very least for the sake of posterity, the song's called "Simian Zoo and Tippecanoe."

I'm so sorry, but I can't actually remember, and I no longer own the game (made this during the game's beta), so I can't check. If anyone else knows, though, I'd be real appreciative of any comment answering this question.

whats the song on the arena