“I know there are plenty of good Orthodox Jews who go to the opera,” Rabbi Angel said. “How do we understand kol isha [a woman’s voice]? What are its parameters, what does it include and not include?”Huh? It seems that the attendance of “good Orthodox Jews” at the opera is in-and-of-itself evidence enough for Rabbi Angel to throw out the prima facie meaning of “kol isha” and open the issue for examination. In fact, the conclusion seems to have already been reached – opera must be permitted because “good Orthodox Jews” attend, and the only question is coming up with a justification. If Roshei Yeshiva seem unable to square these deeds of “good Orthodox Jews” with halacha, then rather than question whether the nominal Orthodoxy of these Jews is all it should be, R’ Angel directs his ire at the Roshei Yeshiva who just aren’t understanding enough.
I wonder if Rabbi Angel ever asked one of the "good Orthodox Jews" attending Carmen how they prima facie justify their actions in light of the prohibition of kol isha. I think the answer would be revealing.