He is very stressed and permanent active.
He barely can fall asleep on his own and wake up after a few hours or even minutes.
Prussia someday began to play on his violin or flute (or another instruments. It varies after what Prussia wants to play at the moment) a few calming songs.
Mostly it's classical, Russian stuff.
...Now when I think about it.
Germans seem to have a thing for classical music and instruments.
I mean...Austria...Prussia...Germany...
If I recall correctly is Norway Germanic as well and Norway plays the violin.
On the other side, classic can be very calming. Russia can play xylophone, piccolo flute and Ocarina.
This is a piccolo flute:
...I wanna learn an instrument by now.
Sayounara
-Nihon-Teikoku
A/N: ...I play Ocarina now.