How can you write a TV series focused on music while not knowing a thing about music and orchestras? How can you direct a TV series focused on music while not researching it in order to give an accurate result on the screen? And as an actor, you also have to make your own research, to play a musician accurately!!! First, pianists don't move their shoulders, when they play. It looks so fake when I see large shoulders movements on screen! Second, cellists do not hold their bow with their hands upside down! How uncomfortable it might be! Third, when a conductor leads, he does not just wave a stick in the air, as he pleases! There are specific shapes to draw, so that musicians know in which beat they are in the measure. Four, in one episode, some students try to trick Cha Yoo-jin by exchanging their parts: oboe will play the clarinet's melody and clarinet will play the oboe's melody. As if it was hard to distinguish the two! As if Cha Yoo-jin was such a genius to discover the trick... I mean, oboe and clarinet do not sound the same at all! It is really easy to sort them apart. If you don't know music and if you never played in an orchestra, you might get fooled, but anyone who really played in an orchestra knows this series is totally botched.