One of the greatest things about Stanley Kubrick's magisterial 1968 sci-fi epic 2001: A SPACE ODYSSEY is the cagey way he puts certain classical pieces to work in the service of the film. The soundtrack to this groundbreaking movie must almost certainly rank as the best use of classical music ever put to film, aside from Disney's original FANTASIA.
Thanks to Kubrick, no one can forget the imposing "Sunrise" of Richard Strauss' "Also Sprach Zarathustra" (as done by Herbert Von Karajan and the Vienna Philharmonic). Nor can anyone forget the scene of the wheel-shaped spaceport rotating to the strains of Johann Strauss' celebrated "The Blue Danube", or the Stargare sequence, which utilizes three works by Gyorgy Ligeti--"Requiem", "Atmospheres", and "Adventures." Although one can rightly complain about "The Blue Danube" being split into two sections on the CD, like the movie itself, the 2001: A SPACE ODYSSEY soundtrack is essential listening for classical music buffs and movie music buffs alike. It comes vigorously recommended.