Holy guacamole! This takes some skill doing live!
"This video is of a marching band performance, but that's not what it's really
about. It's a look into the job of camera calling featuring producer Tim Blair,
taken at the 2004 DCI (Drum Corps International) World Championship. I briefly
worked as a TV switcher many years ago, and marveled at how the news director
managed to herd cats get a live newscast on air every day. How much more
difficult is it to direct cameras for a live event in which you're not
controlling the action? Listen and see!"
http://www.neatorama.com/2013/03/11/The-Cavaliers-Camera-Calls/
And here you can listen to the music:
http://youtu.be/I_u79rK1Pao