Steam has approved the dlcs:
http://store.steampowered.com/app/721710/How_to_Fool_a_Liar_King__Theme_Song/
and
http://store.steampowered.com/app/721711/How_to_Fool_a_Liar_King__Insert_Song_Issho_ni/
You can see the sample of the songs from the link below!
https://www.youtube.com/watch?v=QeMlZcwuSOM
https://youtu.be/Lkdi2qXCMJE
The dlc will also have the lyrics in Japanese, alphabet and the English translation :)
Don't forget to add it into your wishlist! :regina::juli::kingjuli: