Cool concept, always love a rhythm game! I did find it a bit difficult to match the colours in the bottom with my moves, as it went really really fast, so I actually ended up just moving at random, essentially ignoring the colour queues and instead trying to dodge the laser beams in the loop. It was quite difficult, and I only managed to get the boss down to 100HP. Nevertheless, the game generally felt very coherent, and having a tutorial in the beginning felt very smooth. Nice game, well done! :-D