movie theatre screen and attacked the audience, a story that Bava liked more than the other two and began developing it into a feature film. Dardano and Bava took their 25-page treatment for the film to producer Fabrizio De Angelis, who wanted to use footage from Lucio Fulci's films as the film within a film to cut costs. The two would also take the treatment to Luciano Martino who suggested the two to produce the film themselves. Meanwhile, Dario Argento, who was fresh from the financial success of Phenomena (1985) and was beginning to be interested in producing films as he had done previously with Dawn of the Dead. Argento began looking for films to produce, first reading a science fiction script from Luigi Cozzi which he was not convinced with, and then meeting with Bava who agreed to produce Demons. Sacchetti was not content with Argento's suggestions for the script, later stating that Argento brought in Franco Ferrini who he felt only tried to please Argento. Ferrini stated his contributions to the script was to post-pone the appearance of the demons, which he said originally appeared much earlier in the film. Sacchetti then said Argento paid him and had him leave the project, only to invite him back towards the end to give the script a final polish. Sacchetti later remarked that the first half of the film's story was the same as the original script while the second half had more blood and gore and special effect scenes. Filming Demons was shot in nine weeks in June and July 1985. It was shot on location in Berlin and at De Paolis In.Ci.R. Studios in Rome. The idea to have the demons eyes glow in the film came to Bava on set, who said when filming a scene where the demons approach the camera involved the actors wearing refractive paper which caused the effect. Special effects were handled by Sergio Stivaletti who also worked on Argento's Opera. Soundtrack The soundtrack was released on LP, and features 1980s rock and heavy metal themes. The soundtrack was performed live for the film's thirty-year anniversary at Shock Pop Comiccon in February 2015. The instrumental soundtrack was composed by Claudio Simonetti. Track listing Billy Idol - "White Wedding" Accept - "Fast as a Shark" Mötley Crüe - "Save Our Souls" Claudio Simonetti - "Demon" Claudio Simonetti - "Killing" Claudio Simonetti - "Out of