As long as you have this and the device to play it, you can listen to music at home to your heart's content!

Why don't we make and distribute those?

We don't know how to make something like that, though.

What's a CD, you seem to be asking?

To put it simply, it's a magic disk you can fill with music to have it play whenever you want.

We can even charge extra for it being used in public places. The money's gonna flow in, mwahaha....

What are you saying? There's a wonderful group of engineers right here in Gensokyo, isn't there?