First of all, the director did a wonderful job by selecting kpop artists who has knowledge about it, and the main leads are amazing in music as well as acting too. The guy who plays trumpet(taeyi) he is almost similar to the guy in the eighth sense, the guy with depression, idk they got inspired from it or else copied same attitude of the guy due to matching character he is playing. Our yoon se hoon stoles the show with his cuteness and acting, 2 nd couple is our bully as well as do yoon who has great & amazing chemistry in limited time frame and they did a good job too. We need more cute scenes of this couple. The surprise couple our taeyi's oppa and yoon se hoon's oppa there chemistry is too short than other 2 couples. They did not even showed how he died! Remaining and all did good job and i love how they said small details of the music they are going to play what is it! who did this work, what was his name and the name of the music etc. It is very rare to see trumpet played by main lead of the series which was quite amazing to see as well as notes are on the point, idk that much about it but it was so addictive notes too. Basically i think so it was originally inspired from eighth sense (bl) but that is different and this one too because the eighth sense is about trauma and depression alone but in this they have added jazz or music with trauma, Overall, it was a nice try and cute romance between the leads too.