What interesting experiences. My mother didn't really involve herself in her children's lives so I listened to all sorts of music that probably would have raised eyebrows.
The thing that I remember is, some JW's innocently would take kingdom melodies and rearrange them into some nice(r) guitar music. Play it at picnics or get togethers. Then the hammer came down. It was disrespectful to do that to the kingdom melodies. People had to stop immediately. I thought at the time, what a shame, all they were doing was making nice music.
Now look at them. Playing all sorts of worldly music in the kingdom halls and dancing in their meeting clothes.