In the scholarly literature on film music, hyperdiegetic sounds are those that draw attention to themselves and have a symbolic effect, assigning a particular meaning to objects, characters, actions. Starting from this connotation, I would like to propose the idea of hyperdiegetic song or nursery rhyme, analyzing some peculiar works by Ennio Morricone featuring lyrics have clear references to the film’s plot, recounting events that have taken place before or will take place after such music is played. In the films discussed in this paper, hyperdiegetic songs are used as scores or as source music...