This is really stunning stuff. The clean visuals, sharp sounds and chill music bring me back to spending hours playing chill mobile games, and this fits that genre perfectly. It's a wonderful comtemplative rhythm game with alot of depth, and the way mistakes can lead you to spiral out of control I actually found really powerful. To keep track of the various barriers and direction of the wheel, I needed to stay calm rather than panic, which resonated quite strongly.
On that note though, if I could offer a suggestion, it would be in just be to add a little more juice. I could sometimes get confused which way my wheel was turning, or which barriers had been hit. If the wheel turned quick but smoothly, rather than in a fixed step, or if the barriers emitted some coloured particles when destroyed, I would be able to grab my bearings much quicker and make a plan, rather than spamming the space bar in the hopes of regaining some sense of control.
Again though, this is truly really incredible. The art is intensely detailed but still comes off as minimalist and undistracting, and the same goes for your sound work and the game concept at large. I keep playing again and again not to beat any high score, but because I find your high tension rhythm game of protecting a heart from wanton beats incredibly soothing, and thats an incredible achievement.