Reply To: Kol Isha

“Neither is Kiddushin 70a the source, as we hold that Kol Isha only applies to a singing voice and not normal speaking.

So I still don’t understand, where do we get that it refers to only a singing voice and not speaking as well?

I have another question. It says in Brachos 24a (one of the footnotes) that “it is forbidden for a man to listen to the singing of any woman with whom he is forbidden to cohabit”. My question is, does this mean he can’t listen to his daughters, sisters, or mother etc. also?