Eric Whitacre's Virtual Choir

Mr. Whitacre continues to expand on his original idea so that there are now thousands of voices and very fanciful graphics in the latest ones. Still, this is the one closest to my heart, capturing as it does (to my mind, at any rate) the real choir experience of seeing/hearing many voices under the guidance of a single individual.

Eric Whitacre’s Virtual Choir 4: Fly to Paradise