http://forum.paradoxplaza.com/forum/showthread.php?742593
虽说我发现这个DLC时，圣诞节其实已经过了颇久，但我还是满喜欢这首歌的...
CK2跟EU4都可以免费下载这个DLC，也有mp3版本
You rule the world with might and grace,
And make your nation grow,
People and cultures, united by your hand,
A historical paradox
A historical paradox
A historical, ahistorical paradox.

所以本DLC只有音乐吗?

See also: https://www.youtube.com/watch?v=vwdnNyySDLI

感谢大大提供资讯~

这是P社的圣诞礼物。BTW, falalalan是EU2的一首famous/infamous歌曲。