What kind of music would this be?

[enwar3]

I'm wondering what genre music this would be, so I can go buy some. If you've ever heard Ave Maria or Contre Qui sung, that's what I'm looking for. It's a blend of orchestral and vocal voices, with the vocals being the main "instrumental." I went on bn.com and couldn't find anything like it, so I'm wondering where/what I should be looking for...