Hetalia The Beautiful World Character Song Vol.3 Germany & Vol.4 England preview samples
I saw this post on tumblr and as no one posted it here yet..
Official links: [Germany] / [England]
If someone updates the audio on tumblr, I'll add it in this post.
England's song: audio post on tumblr + tentative lyrics: [England 1] / [England 2]
Germany's song: only audio post on tumblr: [Germany 1] / [Germany 2]