Ok, so I have a feeling that you spent way to long creating a creation tool and not a game! But I'm still really impressed! This is the issue the unity editors had and why Unity came to be. because they created the system to make their games and realized they made engines better than games. NOT SAYING your game is bad but holy cow, you made a beat game engine!
Really cool, I think the base tracks are a bit basic but the fact that you made this whole thing is utterly impressive!
Great job!