So... The music doesn't seem to be bad at all, but it might be too loud. The dash seems to be bugged because you can use it even if you don't select it after dying(besides looking pretty weird in my opinion). To replicate this bug select the dash when about to start, die, then go back to title and play again without selecting anything. And not being able to see what was beneath me was pretty annoying and caused a lot of deaths. But I still beat your game anyway!
Regardless of these inconveniences, good job on your second game! The second game I ever made had a lot of problems too(more than yours, besides having less mechanics), but as you make more you definitely get better and better!
If you're interested, I would recommend this tutorial on how to make better jumps in Godot(Your game's jump could be way better!).
And this video by Game Maker's Toolkit for some ideas about how to make a good 2D camera!