So innovative! Both the auditory and visual effects are well done! Although I have used music arrangement software but really don't understand music theory, I can still try a few more times and get the correct result. A small tip: The current trial-and-error feedback is still a bit difficult. For instance, if I put some squares correctly in a column, but the red grid stroke feedback makes me think I put them all wrong or that I don't know which part is correct. This made it extremely difficult for me, who doesn't have much of a listening sense, to move forward (but I'm glad you put the answer to that level in the game screenshots!)" All in all, it's a very good job!