As mentioned elsewhere I picked up Dark Souls recently and I must have spent a good while in the character creation screen, not just to determine my starting stats and appearance but because of this song.
To me, I felt the same vibe as being in a typewriter room in the early RE games. It's soothing, beautiful and a little sinister. It also lends itself well to the game, just like in RE, where it provides a sense of security and comfort. A time to rest and meditate before stepping out into hell.