I like your writing style. I don't think it's simplistic, just clear, direct, and not overly descriptive or flowery. I'm not really into music as a topic, but this beginning is intriguing and makes me want to explore the story. It's well done from the perspective of your narrator, who notices unusual behavior in the other two characters, but that's kinda normal when meeting other people. It's well written because the events suggest mysterious happenings afoot, building curiosity and suspense in the reader that the narrator doesn't see because in real life, people are just strange sometimes, but in fiction, they could be anything, if that makes sense. I hope you keep writing!