My new favorite piece of classical music is Samuel Barber’s Adagio for Strings. In 2004, Barber’s masterpiece was voted the "saddest classical" work ever. The version of the piece performed by London Symphony Orchestra was, for a time, the highest selling classical piece on ITunes. If you haven’t heard it, click here and listen to the whole thing (Right around minute 4 is the climax–incredible).
It’s movements are like that of ministry…up, down, tense, beautiful and relaxed. My understanding is that there is actually and 8-part choral arrangement available. Now that would be "special music" indeed.