Whether you know this song already or not is almost entirely based on whether you have seen O Brother Where Art Thou, a movie that is chock full of old timey blues and folk songs, that I highly recommend. This song comes during a baptismal scene, and fits beautifully. It's a modern cover of a traditional soul song from the south. Allison Krauss provides the main vocals, as well as a gradually building chorus backing her. Listen after the jump.
Moistness Level: [witty river joke]
If you're looking for a tear jerker, watch the video to this, a different Alison Krauss song that features her voice in a totally different way.