Since this is the end of the project here are some things that I would like to say.

I like Godot! Its pipeline is very fast unlike the other engines I have tried. There are some things that would be better but I think they are fine as they are now. 

The thing that I would change is mainly the spawning system. It being completely random, causes some issues. The next time, it might be better to create scenes with fixed values depending on the score.

Pretty happy with how it ended and the randomized music parts came out pretty nicely.

That is all! Looking forward to the next project!