Letterboxd
I thought the central character's synesthesia (had to look up the spelling) was an interesting twist. The art style was gorgeous. I also think I noticed that there were many surprisingly quiet scenes, where you are meant to hear what the character hears from their point of view. I liked that.
There is no real plot to speak of, just a group of high school students finding each other, starting a band, and revealing themselves to the people who love them.
I enjoyed the Christian setting simply because it is novel in film at this time. I enjoyed the pace of life that these characters lived and the setting they grew up in.
Humorous: Also, almost certain that a version of "Born Slippy" plays in a montage scene. I'm old, but I was kinda floored by it's inclusion as it associates so strongly with Trainspotting, heroin, et all. I guess realistically it means nothing to most people these days, but threw me a for a loop when I heard it.
Also, almost all the music sounds like new retro wave to me, which I find somewhat surprising for 17 year olds to be creating. What is old is new again.