Wow, I dunno what to say. This game was incredibly good, and way more polished than you'd expect for a first game. I wouldn't say no to a scene replay option, but good job. This feels very Sierra-like in the best ways, the puzzles make sense, and while this chapter DOES end on a cliffhanger, it is at least a satisfying cliffhanger.
I'm looking forward to Chapter 2, this game took me about 2-3 hours, but it felt very intuitive. If you get stuck, walk around and look for other rooms. The music room was one I didn't find until right at the end, but it was also the last room I needed to be in, so that's fine.
Do you have a Discord?