If you want to see something funny to pass the time, this show is a good option.  
The story is ok, another gender blender one, funny at times.  I watched it because I knew it was from a manga., and I wanted to see something lightful. 
 But sorry, nobody would think the main actress is a guy. On the other hand there were some hole plots in the story (for example, if Go Min Nyue was a good singer as a boy, wouldn’t she be too as a girl? Couldn’t she work in the music industry after that? Why she couldn’t see her brother? What kind of relationship did they have (if they have any)? 
Acting
In the beginning I though it was too exaggerated, but later I remembered it was from a manga, so it was ok. But, anyway, though the main lead was more or less ok, the No Min Nyue girl was sometimes unbearable. Why was she always crying and telling everybody “I’m sorry”? I was tired of it.
Music: it’s ok. I have listened a lot the songstress before watching the show...
Rewatch: perhaps some parts of the show.
Conclusión: it’s funny, drole, entretenida... you should watch it if you want to have fun.