I have a CD of Gregorian Chants for Christmas, it is some of the most soothing, beautiful and meditative music I have ever listened to.
I agree. We listen to them every Christmas.
It was just a small part of one song but it got me exploring the genre and pretty soon I had a couple dozen CDs of nothing but plainchant.
I like the eerie feeling of playing this music on cold, winter nights with all the lights out except candles and maybe the fireplace. It feels like those monks are traveling across six centuries to sing in my house.
Puts me in the mood for strong ale and dark bread.