"Somewhere in My Memory" was written to "run alongside the film" by Williams. It can be heard in numerous sections of the film, either in full length or fragments, forming the backbone for the film's soundtrack. "Somewhere in My Memory" is performed in many Christmas concerts in schools or professional orchestras and choirs alike across the globe. A version in Spanish was recorded in Spain for the ending credits of Home Alone 2: Lost in New York. This version was performed by singer Ana Belén and is entitled "Sombras de otros tiempos" ("Shadows of Other/Former Times"). Making the Plane is inspired by Trepak by Tchaikovsky.