Hey so this is really fun! one thing i would like to suggest is adding an option for remapping the controls, i found myself wanting to hit the notes with F and J like in musedash.
A full control rebinding menu is something I'd like to add eventually, but it's a pretty big task. Luckily Godot is cool so just adding an additional accepted input is super easy as long as it's not already used for something else, so I just updated it so that those controls work as well now!