“Clockworks (Bloody Elevators)” by Wendy Carlos and Rachel Elkind.
This track was one of many that Wendy Carlos and Rachel Elkind composed for The Shining after having read Stephen King’s novel, over a year before the film actually went into production. Of those early tracks, this is the only one that Kubrick used, though not in the finished film. Instead, he used it over The Shining’s striking and iconic trailer, a choice that arguably set the tone for the music he would later use.
This track, though not a part of the original soundtrack album, was released as part of Carlos and Elkind’s full score, which is now out of print.