So, the ending compositions was pretty hard to figure out... I wasn't sure what I was doing at first... I did get both compositions but the lack of feedback when you get something wrong was a bit hard. Maybe even just the classic "hey, this is wrong or this many are wrong" would be helpful. Even if it's vague, as long as we get something...
Other than that, I really liked this game a lot. I liked the pixel huntish aspect because it wasn't too hard. I think you could do more gating, maybe an inventory shuffle system that unlocks new sounds on different scenes etc, just to give it more to do. But within the scope of the jam, really solid!
Excellent work!