I want to give this one more stars because it's an interesting abstract "pure gameplay" experiment. It looks visually interesting/exciting in motion and has decent sound implementation that adds to the experience.
However, it's not intuitive at all and lacks any instructions on what I'm meant to be doing. Even once I'd worked it out, I felt like it needed to ease the player in a bit some much slower/easier rounds to get the hang of it. This would also make up for the lack of instructions!