(or sometimes Clark) find themselves alone together. A portion of this theme is introduced as an interlude in the midst of the "Superman March". Lyrics for the melody were written by longtime John Williams collaborator Leslie Bricusse, for the purpose of having a song during the film's extended "flying sequence". Margot Kidder, who plays Lois Lane, speaks the lyrics in the film, but cover versions of the song have been recorded by Maureen McGovern, Shirley Bassey and others. "Krypton fanfare" is used as the viewer zooms in on Krypton, and again with the self-construction of the Fortress of Solitude. "Krypton crystal" motif or the "Secondary Krypton" motif is a mysterious-sounding theme associated with the physicality of the planet Krypton, both the crystals sent by Jor-El to Earth with his son and the radioactive kryptonite which is deadly to Superman. "Personal" motif is a melody related to the duality of Superman and Clark Kent which musically connects the "Fanfare" to the "Love Theme". "Smallville" or "Leaving Home Theme" is an Coplandesque, Americana melody used during the Smallville sequences which in some ways is a simpler or undeveloped version of the March's "A" theme. It bears a similarity to a theme written by John Williams for the 1972 John Wayne western film The Cowboys. "The March of the Villains" or "Lex Luthor theme" is a comedic Prokofiev-inspired march associated with the villain Lex Luthor and his henchman Otis. Source music A selection of existing songs were featured in Superman, not included on any version of the soundtrack albums, but readily available elsewhere: "Rock Around the Clock", by Bill Haley & His Comets, was playing on the radio of the "Woodie" being driven by some of Clark Kent's high school classmates. The song seems out of context, as it was presumably 1964 at that point in the narrative, yet this song debuted in 1955. It is later established that Kal-El's ship crashed in 1951, and in Superman III it is established that Clark graduates high school in 1965. However, coincidentally (or not) the song introduces Glenn Ford's final scene in the film. Ford starred in the 1955 film Blackboard Jungle, in which that song was prominently featured. Incidentally, this song was not used in the television versions of the film, which instead used an original John Williams source cue composed and recorded for the film, called "Kansas Kids". "Only You", by The Platters,