Today I had a 19 year old student ask if I could transcribe a song for her. That isn't my forte, so I told her that if she gave me the names of the songs I would have my husband Andy do it. She said only one song had a recording and she would have to sing the other, but she is not allowed to sing in front of men because she is an orthodox jew.
Religion does a lot of screwed up crap to women, but this is one of the stupidest things I have ever heard of. Much like the burqa equating to modesty, supposedly a woman must practice modesty with her voice because it could cause a man to "have a relationship" with her. I'm only guessing "have a relationship" is code for justifiable rape to certain sects of orthodox hebrew men.
Remember, it isn't enough to keep your legs closed; you must also keep your lips zipped.