2001: A Space Odyssey (film) had earlier chosen as temporary music for the film. North did not learn that his score had been abandoned until he saw the film's premiere. The initial MGM soundtrack album release contained none of the material from the altered and uncredited rendition of Ligeti's "Aventures", used a different recording of "Also sprach Zarathustra" (performed by the Berlin Philharmonic conducted by Karl Böhm) from that heard in the film, and a longer excerpt of "Lux aeterna" than that in the film. In 1996, Turner Entertainment/Rhino Records released a new soundtrack on CD that included the material from "Aventures" and restored the
2001: A Space Odyssey (film) artist.") John Simon felt it was "a regrettable failure, although not a total one. This film is fascinating when it concentrates on apes or machines ... and dreadful when it deals with the in-betweens: humans ... "2001", for all its lively visual and mechanical spectacle, is a kind of space-"Spartacus" and, more pretentious still, a shaggy God story." Eminent historian Arthur M. Schlesinger, Jr. deemed the film "morally pretentious, intellectually obscure and inordinately long ... a film out of control". In a 2001 review the BBC said that its slow pacing often alienates modern audiences more than it did upon