Awesome idea for a game jam game, first time i played it was without audio, and i was thinking the red line was an indicator for the next day, which made perfect sense to me, but then i came back here to wright my comment and i read all these nice comments about the audio in your game, so i went back and had another playthrough, this time with my audio volume turned up, and i must say i was delighted to hear those first notes, and then hear it play a melody, really enjoyed it, you did a very good job with this one, keep it up!