I'm a music composer/ producer who would love to be a part of the creation of a custom story! I have one album out with two of the tracks being "horror" based, you can listen to them here:
https://www.youtube.com/watch?v=I3hLYpnXUiw https://www.youtube.com/watch?v=PE1Eeb7T8ZI
I also have an orchestral piece, not so much horror but it shows you what I can do with orchestral instruments which are present in the original amnesia soundtrack:
https://www.youtube.com/watch?v=5UhIwNy6Dtc
I've completed Syntorial, a rigorous sound synthesis tutorial with 199 lessons and challenges, just in case you want some spooky synths in your CS. You can listen to some synths I've made from scratch here (there's a whole folder dedicated to horror synths):
https://drive.google.com/open?id=1w1-d2X...-MKys1t5B_
If you're interested, PM me or email me at flynnwikbusiness@gmail.com and we can negotiate things.