This is just a list of my au and what I think each country's fav song would be,
This is also kinda a list of my personal fav songs! I also suggest you listen to the song listed there rlly good.

America- mamas boy (Dominic fike)
Russia- oleander (mother mother)
Britain- silhouettes (sleeping at last)
France- Je te pardonne (maître gims)
England- eat you (caravan of thieves)
Scotland- rise and shine (deorro)
Wales- depraved (mammals)
Northern Ireland- rhinestone eyes (gorillaz)
Ireland- lies (lil Xan)
Australia- genius of love (Tom Tom club)
New Zealand- god (Jake danials)
Canada- high enough (K. Flay)
Ukraine- death no more (ic3peak)
USSR- crying (fuelled soundtrack)
Confederate- caramelldansen Swedish original (caramella girls) <-yes I did make this his fav song
Third reich- I can't decide (scissor sisters)
Japan- candy s3rl (nuEul) <- I think
Imperial japan- eye for an eye (jhon wick)
Italy- wish you the worst (Ryan mack)
Facist Italy- winter (yabadum)
Germany- everybody wants to rule the world (lorde)
Poland- everything stays (aventure time)
Mexico- estanger (jack staubers micropop)
Spain- aishite aishite (will Steton)
North Korea- for nothing at all (murders)
South Korea- loyal brave true (mulan live action)
Korean empire- HIP (MAMAMOO)
Nunavut- dear wormwood (the oh hellos)
Belarus- never gonna give you up (Rick alslee >:))
Newfoundland- YEAH YEAH YEAH (jack conte)
(Canada) Labrador- vibrant eyes (CG5)
Alaska- ending prelude (fuelled soundtrack)
UN- land of all (woodkid)
EU- class clown (cloudkid)
NATO- dirt thoughts (chloe adams)
(Oc) sabashe- my mother wants me dead (ily)
Donetsk- dizzy (MISSIO)
Lugansk- what else can I do (encanto)
Vietnam- heathens (twenty one pilots)
Czechia- kitchen fork (jack conte)

If you have any other characters fav songs just give me a list of 'em! Also maybs gimme a rating of some of the songs since you atleast gotta know ONE of them and if you listened to one of the songs here Bec of this tell me how ya liek it!
Anyways god I'm tired