The gameplay and effects really fit the contour of the song very well. The first part of the level is pretty slow and calm, but everything slowly builds up over time, and then everything is released all at once at the drop — the level switches to more of a night sky theme and the gameplay gets a lot faster. The only thing bringing this level down is the last wave, which feels too slow and could benefit from some more chaotic effects, which I feel like could possibly be done even within the constraints of 1.9.