I'm with you, again. This Ost is brilliant. I have been looking for it, but it's obviously too soon. If I'm not mistaken, the complete ost only comes out when a drama is over. For now, we only get to hear the two end credit songs - which I like, but I prefer the instrumental pieces all the way. I love how they are "theme-oriented", each piece is dedicated to a particular issue: flirt, hurt, longing, fear. If I close my eyes, I can easily imagine what kind of scene is played because the music speaks of it.
On a side note, what do you think of secretary Eun? The fact that Jae Ha is still willing to trust him makes me think we will see the old man finding back if not his integrity, at least his pride as a royal advisor. I was ready to simply loath him, but there are moments when his frankness catches me off guard. It's as if he truly believes a north/south marriage is a mistake, and is not simply meddling because he's an evil agenda.