I think Marty Haugen has done a lot of stuff there. He's a fairly important modern liturgical composer who uses a lot of folk tunes and styles in his work. (You can see a lot of his stuff in Gather II, a Catholic hymnal put out by GIA.) The setting is absolutely gorgeous, and unless along with your agnosticism you acquired a distaste for natural beauty, you should find it hard to be bored. (I.e. if the people bore you, step outside! If necessary, hop on a horse.) ;-)

Liland