I'm surprised that there is no review of this drama. It was based on a 2017 film of the same name. It has been available to view for over 1 year. I suppose it is a sleeper for most people. That is a shame as it is surprising good.
However, there is a couple of caveats. It is a idealistic youth drama and there is a lot of music and most of it traditional Chinese "folk" music. If you are not into this genre then you might want to skip this.
The drama was set in a school but not a typical high school, it was a music conservatory. The school was roughly divided into western classical music and traditional Chinese music streams. It was this division that formed the central plot.
The writer really went out of her way to give the standard school romance a twist. Everything were a little left of centre. With it being a "special" school, the characters were also more quirky. Most were nerdy and had strong personalities that departed from the typical mould. It made the show more interesting and unpredictable.
For example, where the FL and her roommate usually formed a clique, she was the odd one out here and she ended up forming a much stronger bond with four girls that were much quirkier. Those girls all had their unique personalities and solid backstories so that they are not the usual one dimensional BFF trope. If anything, they stole the show half the time.
Another curve ball the writer threw at us was the OTP pairing. At the start of the show we were introduced to the FL and her crush which was the handsome piano prodigy in her year. It sounded like the standard unrequited love plot, right? Well, you will be wrong. Her male BFF, who had a crush on the FL but still enabled her to chase after the piano god, became the ML and it was their budding romance that formed the basis of the OTP. Their relationship was very innocent and there was not a bit of skinship here. That was where the 2OTP came in.
The 2OTP was a more mature pairing and there were some nice skinship as their romance blossomed. This romance line was strong enough to be the main plot for most c-dramas but it was a little tropey. At least the angsty bits were handled with maturity. The 2ML was a popular c-drama star and his (the writer's) observations of the industry was quite insightful.
Of course, being a school drama, there was a lot of teenage angst and schoolyard shenanigans but nothing was over the top and even the darkest situation had a light at the end, there were also a good deal of humour and slapstick to keep things light most of the time. There were lots of positive messages, some might find it a bit preachy but I think it was ok within the drama's youth/school setting.
The writer did not leave everything in the land of the unicorns though. There were dark themes like bullying, parental pressures, self image, ageism and even death but they were all there for a reason and she used them to push forward more positive plot developments. I think it was a fair call to highlight the marginalisation of traditional Chinese music in the face of c/k/j-pop and western classical music.
As most of the actors were young, their performance can be a bit patchy but it was not a big issue. Some of the minor plots were a bit weak and cliché but they are just ripples in the overall dramascape. As someone who knew a little bit about music education, some of the plot device used were a little unrealistic but hey, it is dramaland so just keep the rose tinted glasses on a little longer.
The OST was great if you like Chinese music or even music in general. The band battle in episode 23 was definitely a highlight.
Kudos to the writer for giving us the feels but without making it too sugary. Words like heartfelt, warm, sweet, uplifting, cute, touching came to mind when watching this show. Was it realistic, no, I wish it was and the world would be a better place but when you watched it and maybe even rewatch it, you will feel these feelings again and again which is a shelter from our trying times. Highly recommended.
P.S. I finally watched the original movie (fast paced, fun and entertaining, BTW) and I have to say that this drama series was actually better. This should not be taken for granted as a lot of movie spin-off becomes a draggy mess. The writer kept most of the key scenes and the central theme but fleshed it out really well. The 2OTP love line was completely new. In fact, all the teacher roles were added. Several other supporting roles were new and, in hindsight, how wonderful they were. The old lady living across the practice room was a gem. Very nuanced and bridged the generations . The food delivery guy with a strong Cantonese accent was another. It is rare to hear any type of accent in a c-drama as they try to make everyone speak standard mandarin (it is understandable, a Ming dynasty assassin speaking with a Taiwanese accent will break any immersion) hence dubbing is everywhere and can be a bit of hit and miss. To hear someone who is different is refreshing but more importantly, it wasn't a wallflower role. His interaction with them was so sincere. The farewell scene was very touching and I bought it 100%. Where the movie was a great idea and well executed, the drama fleshed it out and gave it a heart. Yes, it might be padded with sentimental tosh but so is a hug from your grandma.