When you say your brain snapped, I hope you mean it in a good way :)
For the music thing, do you mean the second enemy specifically, or the start of the second wave of enemies? (which would be the 4th enemy)
I mean the second enemy specifically. Maybe it's just that I was reaching it at the moment when this music was supposed to start playing.
Oh right, that is intentional. It's always supposed to start playing when the second enemy appears. But I can see how that can be jarring. Thank you for the feedback!