Classical music (music created by musicians who are commonly not classically trained, often from a purely oral tradition). Some composers, like Dvořák and Smetana, have used folk themes to impart a nationalist flavor to their work, while others like Bartók have used specific themes lifted whole from their folk-music origins. Certain staples of classical music are often used commercially (either in advertising or in movie soundtracks). In television commercials, several passages have become clichéd, particularly the opening of Richard Strauss' "Also sprach Zarathustra" (made famous in the film "") and the opening section "O Fortuna" of Carl Orff's "Carmina Burana"; other examples
2001: A Space Odyssey (score) exist outside the action, while uplifting it. With regard to the space docking sequence, Ebert stressed the peculiar combination of slowness and majesty resulting from the choice of Strauss's "Blue Danube" waltz, which brought "seriousness and transcendence" to the visuals. Speaking of the music generally, Ebert wrote: 2001: A Space Odyssey (score) The "2001: A Space Odyssey" score is an unused film score composed by Alex North for Stanley Kubrick's 1968 film, "." In the early stages of production, Kubrick had commissioned noted Hollywood composer Alex North, who had written the score for "Spartacus" and also worked on "Dr. Strangelove",