2001: A Space Odyssey is a soundtrack album to the film of the same name, released in 1968. The soundtrack is known for its use of many classical and orchestral pieces, and credited for giving many classical pieces resurgences in popularity, such as Johann Strauss II's 1866 Blue Danube Waltz, Richard Strauss' symphonic poem Also sprach Zarathustra, Adagio from Aram Khachaturian’s ballet Gayane, and György Ligeti's Atmosphères. The soundtrack has been re-issued multiple times, including a digitally remastered version in 1996.