Yeah i get what you mean with the rhythm issue, i wrote a script that creates a tile map based on the tune, but it's not working outside my own configuration it seems. The point was for me to plug it onto an API and have unlimited music, but it's prolly just a terrible idea tbh.
When it comes to the cubes bleep sound, it was a last minute change since i couldn't find anything that fit and i had to release the game asap, and move onto the 20s gamejam.
i'll 100% get back to this and update it, will also release it on mobile. Thanks for the rating and headsup friend !