Eric Whitacre

This actually brought me to tears: 


http://www.ted.com/talks/lang/eng/eric_whitacre_a_virtual_choir_2_000_voices_strong.html

I don't usually listen to choral, classical, or opera music simply because I can't handle the emotion generated by such moving pieces.   

You can find more info and links to the actual songs by clicking on "Full Bio & More Links" on the right-hand side, or search Eric Whitacre on youtube.