[Nick Zwar]

Talk about a micro-genre if there ever was one.
There is of course Leonard Bernstein’s “Mass”, which is a “classical” composition that mixes orchestra with (then) contemporary styles like jazz, rock, and blues, alongside gospel, and pop. But it’s still more “classical”. And Mike Oldfield’s “Millenium Bell”, which may not be strictly religious, but does have spiritual overtones and is with orchestra, choir, electronics, etc… but from a later time frame.