It is good that I watched before reading all reviews and comments here. Obviously most of them liked Baek In Ho. I don't see any special about him. Most of his scenes were just playing piano, practicing piece in piano and trying hard to make himself better than ML.. He has more air times than Yoo Jung which makes it boring, I have skipped all scenes of Baek In Ho. Park Hae Jin and Kim Go Eun are great actors. They portrayed their roles very well. This could be a hit if PD did not make dramas and reverting the story to Baek In Ho, and until now I don't understand why she let them aired. Many episodes were wasted and many important parts from Webtoom were omitted. But overall, I love this series. Park Hae Jin and Kim Go Eun are both very effective and they managed to show to viewers their characters.