2001: A Space Odyssey United States Library of Congress and selected for preservation in the National Film Registry. A musical score was commissioned for the film and composed by Alex North, but Kubrick ultimately decided not to use it, in favour of the classical pieces he used as guides during shooting. These included Richard Strauss's "Also Sprach Zarathustra", Johann Strauss' "Blue Danube Waltz", and music by twentieth-century composers Aram Khachaturian and Gyorgy Ligeti. Toward the end of the sequence where the HAL 9000 computer is lobotomized, it begins to play the 1892 song "Daisy Bell (Bicycle Built for Two)" by Harry Dacre, which Clarke
2001: A Space Odyssey (film) its initial release. "2001: A Space Odyssey" is now considered one of the major artistic works of the 20th century, with many critics and filmmakers considering it Kubrick's masterpiece. Director Martin Scorsese has listed it as one of his favourite films of all time. In the 1980s, critic David Denby compared Kubrick to the monolith from "2001: A Space Odyssey", calling him "a force of supernatural intelligence, appearing at great intervals amid high-pitched shrieks, who gives the world a violent kick up the next rung of the evolutionary ladder". Poet and critic Dan Schneider wrote that "2001: A Space Odyssey"