War of the Worlds (1953) on 4K UHD: https://amzn.to/3uQehHT According to a 1953 article by producer George Pal, the distinctive sound made by the Martian war machines' heat rays was created by mixing the sound three electric guitars played backwards with the addition of a harp. The sound of slowed-down air raid sirens was also used. This unique sound effects added to the eerie atmosphere of the film. | Monster Fan Club