Very charming! There's a really neat concept here with the music and art. Although it may follow a simple and traditional structure, there are some unique ideas implemented that really get to tickle your brain a bit—like the change in perspective and puzzle elements. It's unfortunate that the collision of the boxes don't seem to work properly; I did use it to my advantage, but I'm not sure if that was the intended way of doing things. Also, being taken back to the start after dying does get frustrating the more you advance. However, I don't believe it's all bad honestly; just a few tweaks here and there would create a much smoother experience
Extra points for the use of color! I've seen a lot of black and white, and I love how this game incorporates the color-changing background into the gameplay.
I think the art style is attractive enough to get people interested. Overall, there's room for improvement, and there's definitely something special here. I'd love to come back to it with added refined details. Nice work!