The music to the original Alien trailer, does it exist outside of the trailer? If so, what is it called? If you are not sure what I am talking about, it can be heard here:

http://www.youtube.com/watch?v=ojhGdRSkiUw

Please note: I do not need an mp3 of this trailer, as I could do that myself but I'd rather just have the whole song if it exists. Please and thank you. :D