I am referring to the first video in the article about the divorced couple who got remarried at a Bar Mitzvah. Listen at the part where the Rabbi says “Arayot” and then “Arusot”. What is he saying??
Here is the text of the normal berochah. I did not listen to the video. From what you are asking it seems to be the normal brocha on a kiddushin.
ברוּךְ אתּה י-י א-להינו מלךְ העוֹלָם אשׁר קדשׁנוּ בּמצוֹתיו וצוָנוּ על העריות ואָסר לָנוּ את הארוּסוֹת והתּיר לָנוּ את הנשׂוּאוֹת לָנוּ על ידי חפּה וקדוּשׁין. בּרוּךְ אַתּה י-י מקדשׁ עמוֹ ישראל על ידי חפּה וקדוּשׁין.
He seemed to be encouraging the people to react to the brocha. It seems common with Arabic music styles. I have no idea why he did it in middle of a brocha, but it can’t be worse than the ay ay ays, singing, clapping, and dancing I’ve seen some sects do in middle of davening.