Prize singer begins by binding himself to Rabbainu

The Hebrew na-nach.net has a video posted of what I guess is some type of equivalent to american idol, where 4 judges here someone singing, and if they like it they choose the singer, and only then can they actually see him. So this guy gets his turn and begins by binding himself to Rabbainu, and proceeds to sing, and 3 out of 4 judges opt for him.