HaLeivi- I’d like to see that clip. YWN doesn’t allow links but see if you can figure out a way.
I never said its assur to sing it. Just that the mekor is from the goyim. If Klal Yisroel has been mekadaish it, fine. However shlissel challa is brought down in seforim and they say reasons for it. It certainly did not originate by the goyim.