Play me a lullaby

As a writer, Cleo's life revolves around the overflows of emotions she feels whenever she decides to dit down and write a chapter. Her feelings, good ones for the most part, get clouded when she hears her neighbour, a concert pianist, play sad songs all day long.
Oliver's life has always been about music, but the joy he once felt, when his piano was something close to an extension of his own limbs, seems to be whitering away. How will their lives change when Cleo decides to complain Oliver's sorrowful repertoire?