[Spoilers C1E74] What song is this that Matt plays during some "creepy" moments?

There is a song that plays in the background with some stringed instrument during some creepy moments. I'm curious about the name, artist, or link to the song because I particularly like it.

It's best described as an example such as at ~0:53 of C1E33 or~2:40 of C1E74, but it permeates the entire season.

I dug through a lot of the posts regarding Matt's playlist and couldn't match it up, I've found posts that link to other songs, but can't figure it out for this song. Many other songs are mentioned and identified in my search, though.

Anyone have a good lead on it?