The storyline had great potential but was ruined due to the dull romance. For a musical drama, barely had any music at all. The main couple were god-damn annoying; the main guy could not act for his life and his character was actually kinda creepy (overly possessive in scenes) and I don't know how many times asian dramas are going to re-use the whole overly innocent girl who everyone loves cliche. Oh doo ri plus professor storyline could have been better but she became borderline creepy/stalkerish (the drama kinda romanticized stalking). The best parts were probably Byung hun and Do sung parts as their storylines were great as well as their singing. This drama needed more "pizazz" to be a good musical drama.