This is a video demonstration of The Apprehension Engine, a conglomerate of musical instruments built by Tony Duggan-Smith so filmmakers can create their own creepy sounds instead of paying for stock audio. Admittedly, it does sound pretty scary. Now I'm not saying I peed my pants-- "But you did." Right, but I'm not saying it because that would be embarrassing. "But you just admitted to it." That's it, I want to speak to my lawyer.
Keep going for the eerie demonstration.
Thanks to DD, who informed me he keeps these sound effects playing in his apartment all the time to keep his roommates on their toes.