Music Related Question (Classical Genre)

I need some help trying to determine the appropriate name for a sub-genre I am looking for within the 'Classical Music' category.

Basically I would describe it as classical sounding music with singing, but rather than there being a single vocalist it's instead a choir or group of vocalists singing in unison/harmony. When it's men singing the sound may remind me of very old 'church' type hymns, and when it's female vocalists I would describe it as almost 'angelic' sounding. You can't even discern the lyrics but the sound of the voices in unison is very relaxing/soothing to my ears.

I don't know enough about classical music to know exactly what type of genre or sub-genre this is considered but I'm trying to determine this so I can search for some music in this style.

I browse on Amazon's mp3 site, here is their classical page:

[link to www.amazon.com]

As you can see there are many different sub-genres listed to the left. Having a hard time finding what I'm looking for.

I don't know if this is enough info for anyone to help but I figured I would try.



-thanks.