This video has been making the rounds of the choral music networks. Eric Whitacre conducts a virtual choir of singers located in 12 different countries.

Brian Newhouse, the host of SymphonyCast, wrote: “You probably know the music: the Dale Warland Singers, Cantus, and just about any college choir worth its salt have made Eric Whitacre’s “Lux Aurumque” its own. And every one of these groups knows how hard it is to make it sound beautiful and easy. But how the producers of this video got every singer to enter and exit on cue, keep the pitch up, and make a beautiful sound—with none of them in the same room? Well, my hat is off to them!”

There are a series of these videos, but this piece might be the most famous… enjoy!