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 (film) as a pessimistic account of human nature and humanity's future. The most extreme of these interpretations state that the fetus floating above the Earth will destroy it." Many of the cataclysmic interpretations of the film appeared inspired by Kubrick's direction of the Cold War film "Dr. Strangelove" just before "2001", which resulted in dark speculation about the use of nuclear weapons orbiting the Earth in "2001". These interpretations were challenged by Clarke, who said: "Many readers have interpreted the last paragraph of the book to mean that he (the fetus) destroyed Earth, perhaps for the purpose of creating a new