Geeknovaera on one of the KULT groups on Reddit created this great collection of mood music to use with KULT: Divinity Lost. There are really nice collections that creates haunting atmosphere in many different categories.
I do own the official KULT soundtrack but I find that this music can be a handy thing to mix up it with. And to find tunes for your own personal play lists!
So, enjoy the dark tunes!