In the recital scene, the song "Vice Versa' is performed by a British band Samson, featuring future Iron Maiden vocalist Bruce Dickinson (I)'.
The film is often miscalled THE Incubus because of the marketing tagline - "The dreams. The nightmares. The desires. The fears. The mystery. The revelation. The warning. The Incubus: He is the destroyer". In actuality, the film is simply titled 'Incubus'.