Just a little playlist I complied of appropriate-sounding theme songs for the main eight of Hetalia. Enjoy!
Italy
"Mambo Italiano" - Shaft
https://www.youtube.com/watch?v=TtoZ6GRPGbo
Germany
"99 Red Ballons" - Gold Finger
https://www.youtube.com/watch?v=-X5_q4a9HQs
Japan
"Turning Japanese" - The Vapors
https://www.youtube.com/watch?v=IWWwM2wwMww
America
"Courtesy of the Red, White, and Blue" - Toby Keith
https://www.youtube.com/watch?v=zSOyBGGsUk8
Britain
"Victoria" - The Kinks
https://www.youtube.com/watch?v=z2GHlcwlT1Y
France
"Free Man in Paris" - Joni Mitchell
https://www.youtube.com/watch?v=KiKrk2Jcx8U
Russia
"Rasputin" - Boney M.
https://www.youtube.com/watch?v=aiSdTQ9DW9g
China
"Kung Fu Fighting" - Carl Douglas
https://www.youtube.com/watch?v=SobQQWTmfbA