Tubular Bells was composed by Mike Oldfield and released in 1973, the same year director William Friedkin used its opening section in The Exorcist. The film became a landmark horror release, and the delicate piano motif became inseparably linked with demonic possession in popular culture. Decades later the clip circulates on soundboards and in short form video, where a few notes instantly turn a prank, costume reveal or haunted house clip into a reference everyone recognises without any explanation or dialogue needed at all.