Muse in Life (2020)

Simon, a pianist, struggles to write a new song on a one-week deadline. Frustrated, he takes a break at a nearby cafe, where he overhears a couple arguing, which surprisingly opens up his creativity. He then comes back day after day to eavesdrop on other people's conversations, listening in on their secrets to use for his music, until he is faced with a difficult choice about whether to save someone or simply continue to hide in the shadows.