Prussia sometimes randomly plays...
...
Google translate says it is called ,,recorder".
I think that's wrong.
anyway, he randomly plays this thing:
In a more childish and smoother form.
He...screeches through this.
It sounds like a train. This...squeaky train thing.
And it happens randomly. Sometimes he tries purposely to play the song but screech it.
Like this
It's funny.
Sayounara
-Nihon-Teikoku