2001: A Space Odyssey (soundtrack) used is Ligeti's "Lux Aeterna" and an electronically altered form of his "Aventures", the last of which was so used without Ligeti's permission and is not listed in the film's credits. Since the film, "Also sprach Zarathustra" has been used in many other contexts. It was used by the BBC and by CTV in Canada as the introductory theme music for their television coverage of the Apollo space missions, as well as stage entrance music for multiple acts including Elvis Presley late in his career. Jazz and rock variants of the theme have also been composed, the most well known
2001: A Space Odyssey (soundtrack) and a nine-minute compilation of all of Hal's dialogue from the film. Citing John Culshaw's autobiography "Putting the Record Straight", the Internet Movie Database explains In the early stages of production, Kubrick had actually commissioned a from noted Hollywood composer Alex North, who had written the score for "Spartacus" and also worked on "Dr. Strangelove". However, during post-production, Kubrick chose to abandon North's music in favor of the now-familiar classical music pieces he had earlier chosen as "guide pieces" for the soundtrack. North did not know of the abandonment of the score until he saw the film's premiere screening. In