Nocturne (Prime Video)

Shy piano student Juliet Lowe (Sydney Sweeney) has always been overshadowed by her twin sister Vivian (Madison Iseman), who has been accepted to Juilliard. When the school's star soloist Moria commits suicide days before an important concert, the arts academy decides to rerun the competition in her memory.

Juliet finds a mysterious notebook that belonged to Moria and soon, Juliet's talent immediately improves as she becomes the academy's top student. However, Juliet learns the true cost of perfection as something sinister tries to take control of her.