Really interesting idea of having the song solely being created by the player input. And very cute art style.

Very cute art and idea. Had a bit of a hard time figuring out if I had pressed the button at the correct time or not either a visual indication or some music to play along to would have helped a lot. Similar to other reviewer I would have liked some kind of tutorial or a description on the itch page, it wasn't super clear how the CDs linked to what I was doing in the rhythm game. 

Loved the concept and the cozy vibes, I definitely thing you should keep working on it as I think with all the planned features it'd be a great little game. I don't know how easy it would be, but it'd be fantastic if could listen back to your own recordings vs how the song should actually sound :D

Well made for the time, and enjoyable. A tutorial would go a long way. In addition, a timer before the level starts to be able to move you hands to the keys would be good, as well as visual feedback on if you have hit a note or not would be good. I liked the concept, feels unique