Okay. I've had a few questions.
"Two Steps from Hell" is a music making group that puts together thirty second to two minute long stock music for use in movie trailers and promotional stuff.
I think they got their big break when their track "Moving Mountains" was used by one of the "Twilight" trailers.
Anyways, now, and most deservedly so, their work is available from iTunes.
"Diabolic Clockwork" is a track they recollected for an iTunes release with a Halloween album.
And at 3 o'clock in the morning, it is creepy as hell.