This isn't quite technically accurate (it would be done on a computer, and for THIS singer it would be impossible to do in real time), but the video (if not all of the audio!) is enjoyable anyway:
The profession of a sound engineer 2013
https://www.facebook.com/photo.php?v=10151428843259073
The profession of a sound engineer 2013
https://www.facebook.com/photo.php?v=10151428843259073