Virtual choir

Tonight's musical interlude - Eric Whitacre's Virtual Choir - 'Lux Aurumque':

From this description:

Composer Eric Whitacre and his collaborators offer up a really interesting hybrid of the virtual and the real in the Virtual Choir, combining 185 separate choristers from 12 countries recorded independently, all conducted by the composer (through a prerecorded conductor track on YouTube) and combined into a single performance. ...