A toy piano might seem an odd choice for a spooky soundtrack theme, but children's instruments have been used in horror scores before, e.g.: a wind-up children's music box set against slightly atonal music = creepy.
And while you're on his "MUSIC" page, be sure to check out the other bonus songs on the bottom of the page: covers of Devo's all-time classic "Beautiful World," and Harold Faltomeyer's "Axel F."
It's a limited-time offer, probably coming down sometime in early November, so grab it now.
Twink: "Theme To Rosemary's Baby"