UPDATE: I finally got a file opener for this and played through the first few levels. As an avid puzzle game fan, I'm pretty familiar with this concept of game, but was unfortunately very confused on how to actually play the game until i spam clicked around for about a minute and hit every key on my keyboard, then the green mirrors started moving. I wish there was a tutorial on how to play the game, especially considering that the mechanics weren't the most intuitive.
I also feel that some sort of regulation or rework of the movement of the mirrors would be very nice, as currently the WASD controls are most often completely unaligned with the direction the mirrors actually move in themselves. This made it even more frustrating to finish a level as I struggled to get the game to work then to get the mirrors in the right place with reversed controls.
I feel the sound and music was my favorite part of this game, which helped add to the relaxing environment and nail home the idea of a soothing puzzle game to relax to. I love the fact that you made this game and added multiple playable levels to it for us to experiment with and play! Good work.