"Mirrorbright" originated as a customary lullaby on Alderaan. The Alderaanian grandmother belonging to Carise Sindian would often sing it when she was feeling reminiscent about her homeworld. Because Alderaan lacked a naturally occurring moon, Leia Organa surmised, with considerable dismay, that numerous Alderaanian children likely associated "Mirrorbright" with the appearance of the moon-resembling Death Star battle station in their sky, given that the song's words referenced a moon. Additionally, Organa possessed a music box playing "Mirrorbright," which she stored inside her keepsake chest.