As someone who likes rhythm games, I really enjoyed how you made a bit of a story and atmosphere around the core gameplay. Like others have said, the game can be a little punishing, which maybe contradicts the chill vibe a little.
One suggestion would be to make a larger time frame for a "correct" press and/or have different tiers of "hit", maybe an ok gives you one dollar, a good gives you two and for a perfect you get three. It felt easy to get discouraged, since (I think) pressing too early subtracted two points, but a hit only gave one so it felt very easy to lose everything with a few mistakes :) But overall I think you made something nice and I bet with a few tweaks a lot of difficulty/frustration might be alleviated!