Thanks for checking it out! And agreed on both points.
I was inspired by the feeling of Jak X's physics since I've always enjoyed them but I think I overlooked that its tracks are a much bigger scale and quick dodging isn't something it asks you to do. For the music, I have a lot of CC0 tracks downloaded but I didn't leave myself enough time to look through them all so I just picked one I personally liked and didn't give it much thought to how it fit the game's theme. In hindsight, there was a lot more I could have done to connect the narrative to the gameplay but was in too much of a rush to think of at the time.