Some good QOL improvements would be a song list, a level selector, a level selector screen, and a

Also, you should stick to the parkour. I found the

parkour to be much more fun than the puzzles, which were really slow. I really liked the dream aesthetic as well. Kinda vapor-wavy.

Thank you for your review. I'll try to include your recommendations in the updates.

EDIT

I added an option that allows you to pick up objects (Available in the pause menu (esc)). This will make the puzzles way easier if you don't like them.