PBA: I think you’re wrong on that. The Halachah is that a man can look at a wife when she’s a Niddah. Why would singing be any different?
Toi: I’m not sure what you mean by that. I don’t believe in this right and left business anyway. I follow Halachah as brought down in the Poskim. I’m not sure why others expect differently, either “Lehakel” or “Lehachmir”.