Review of Sing a Bit of Harmony

I often despise Disney Movie when the songs aren't fun. Frozen "Build A Snowman" and "Let It Go", also Despicable Me "Minion Song" turned out so good. I am sure that "song" wasn't needed in this anime. Every character supposed to be emotional, but somehow I can't immerse. This is supposed to depict youth and human relation, but I didn't find anything outstanding. What I found is just a gloomy story, and somehow forced to become happy. Story about "AI is Human" has been done so much better before with better characters. Like in Plastic Memories. J.C. Staff, the studio that adapted many youth anime set in high school. Theirquality of adapting that kind of anime dropped since Sakurasou(even though they changed the scenario from the LN, it turned out so well).
If you are asking me to watch this when I already had a heartbroke watching a youth series that aired 9-10 years ago from them, this is just a disappointment.