Religious Music - It dosen't mater if it's Catholic, Protestant, Orthadox, or even Islamic, Jewish, Buddist, Ect.

[Positron]

Iona is a British folk-rock band with Celtic influences, and all of their songs are Christian themed:

"When I Survey" is set to the famous Scottish tune "The Water Is Wide":

When I survey the wondrous cross
On which the Prince of Glory died
My richest gain I count but loss
And pour contempt on all my pride

"Divine Presence" features the "Frippatronics" of Robert Fripp (King Crimson)

I wish this boat could carry me to You
For I am thirsty for Your love