Traditional Irish Music
I first heard it from Dervish, it's a wonderful and haunting tune (cracks my bones when I'm playing it on the box though) :)
i learnt this last week in the willie clancy banjo classes ... quite easy to pick up and add ornamenttion
One of the first ones I learned from my banjo teacher. It does pop up once in a while in NYC sessions...
I heard it first on a contemporary Christian album by Robin Mark. I can't remember the name of the album but the song on the album is Killavil. It's a bit faster than the above example but it is very well done and worth hearing. Blaine Chastain has a version of it on his lesson website.