This Хеталия Фан-арт might contain
аниме, комиксы, манга, анимационные фильмы, комикс, мультфильм, книга комиксов, портрет, выстрел в голову, близком расстоянии, макро, and крупным планом.
The song is Just Around the Riverbend from Pocahontas. I didn't put much thought into how this song fits the Far East Asian countries. Maybe they felt like this right before meeting 19th/20th century Western countries.