Watch the amazing verbal choreography behind Grease Live

Grease Live was the musical you should have watched on Sunday night, with some knockout performances and slick production values. But what does it take to pull off such a complicated broadcast? Well, this video from the show's associate director Carrie Havel shows you a small slice of the action, with Havel coordinating the live footage  singing along to "Great Lightning," but with all the lyrics replaced with camera numbers:

As The Verge's Christopher Plante and Jamieson Cox noted in their review, live broadcasts of this type are pretty uncommon and take a hell of a lot of skill. Havel's role is obviously impressive, but just think: coordinating the cameras is only one part of the performance, which included big dance numbers, lightning fast costume changes, and a shooting location so large that golf carts were needed to transport actors between scenes. It just goes to show that when it comes to live performances, the choreography behind the scenes is usually as impressive as what's on stage.