Ever since she was born, Marinette could hear piano music in her head. 

It wasn’t any song that was playing in the world immediately around her; instead, what she heard were the songs that her soulmate was listening to. They came to her as her soulmate heard them, at seemingly random times from early morning to late afternoon, when the golden rays of sunset began to stream throughout Paris. Marinette enjoyed hearing the piano; it was proof that her other half was out there, alive and waiting to meet her.