A bit confusing entering for the first time but I got the gist of it as a puzzle platformer. I like the idea that you have a general list of platforming mechanics you can interact with which you "adjust" or "tune" with notes you found around. Some thoughts:
- Tutorialisation is pretty spot on I think. You introduce all the mechanics pretty well and all in all, while there's a bit of a bump in the beginning in trying to understand what the game is about, the average player should be able to pick it up after a bit.
- The way notes interact with the instruments is in general, quite rough though. And I find myself being fling by the instruments as opposed to just wanting to change their tuning. The tuning itself is also somewhat confusing and I find myself unsure which tune colour is the strongest or the weakest. Maybe you could consider simplying the number of tuning you can do to just 3 colours? I imagine that would also make your level design simpler.
I think the messaging and the game presentation can overall be improved to say that this game is a puzzle platformer. The art aesthestics is actually quite unique and I find myself intrigued, only to be mildly dissapointed it is a puzzle platformer. That said, the unique twist of being able to "tune" platform/level mechanics to varying levels of strength is quite nice. There can be much much more polish added to really emphasise on this tuning mechanic.
My 2 cents.