This hetalia - axis powers fotografia might contain
surcoat, sobretudo, uniforme de gala, uniforme de vestido completo, boina verde, forças especiais, soldado de elite, soldado de elite de boina verde, and forças especiais.
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.