I'm suprised no one added "Sign" and "Forces" from Berserk, alternatevly Aldnoah Zero has some great soundtracks in form of Bre@t//less, No Differences and Keep on keeping on.
I could give you the MP3s if you like.

I would appreciate it a lot if you could send me the MP3's, I'l add them as fast as possible

Ok, but how can/should I send them to you?

Send me a Youtube link instead, I'll convert them myself

Ok, but I didn't got No differences and Keep on keeping on from youtube.

(Marukaite Chikyuu - Hetalia
Hatafutte Parade - Hetalia
Mawaru Chikyuu Rondo - Hetalia

There are other songs, such as character songs, alternatives to the 3 songs listed here, and vocaloids.)

I was planning on adding the character songs. Unfortunately, I can't add Marukaite Chikyuu, Hatafutte Parade and Mawaru Chikyuu Rondo because there are no global versions of these sogns.

Maybe some of the Shokugeki no Soma soundtrack would go well.

(Atleast we can get the character songs.)

引用自 The Great Lakes Unionball：

(Atleast we can get the character songs.)

I've decided to make a separate Hetalia mod, I'l upload it in a couple of hours

引用自 (DNCSV) Deiniol：

Maybe some of the Shokugeki no Soma soundtrack would go well.

Can you specifiy the songs you want me to add

perhaps the opening song of baccano guns & roses

引用自 alexavalos：

perhaps the opening song of baccano guns & roses

It's going to be the maintheme

TANK! - Cowboy Bebop
basically anything from Yoko Kanno

Savior of Song- Arpeggio of Blue Steel
This Game- No Game No Life

Openings for:
Akame Ga Kill (1st op)
Kantai Collection (1st Season)
Code Geass (1st op)
Dance In the Vampire Bund

Closing for:
Kantai Collection

Also, add some Love Live songs. i.e. After School Navigators (played only if exploration ideas unolocked, for example)