Its a random weird drama that starts out super cliche "rich ceo tricks poor FL into working for him just to keep her around" for the first 4 episodes I was really questioning if i wanted to keep watching, but I slowly started getting interested. I wanted to watch the whole thing to find out what the heck is going on as well as why on earth there is sooo many good looking guys in one drama!?!
It has a story that for me at least started predictable, became interesting, then slowly it went back to being recycled tired old tropes as we race to the ending. A few questions have been answered but one of the biggest things about the series still hasn't really been touched on that much. Since I've already watched 20 episodes, I'm going to go ahead and keep going for the final 4 as soon as I find them subbed in english. If there was still 10 more episodes, I'd honestly be dropping it just because they brought a VERY overused plot device into the show and it really killed the momentum.
update to add: I finished by sheer force of will.

In conclusion:
Music is unnoticeable and unremarkable
Story HAD a good hook that is underutilized
Actors are pure eye candy
Tons of tropes
Would only recommend if you're patient and have time to kill waiting for something beefier