Amniotic fluid is a good conductor of sound so just make sure it's not too close & not too loud like the comment above says best safe than sorry !
And that was me going several days a week, helping with youth groups and stuff. So I was exposed to it often.
With my first and second pregnancy I had two twelves in my truck and they both have good hearing and they were both born big baby's I didn't think at the time it was bad but I guess it's just one of those safe then sorry type things
The church band was pretty loud with alot of bass, when I was pregnant with my first. It would make me get up and go to the back, but she was born 9lbs 6 oz healthy as can be :) Not sure if that helps :)
I heard that they are fine cause of the protective around them. But I dunno.
I read all about this baby's exposed too music louder than back ground music at a department store often , have actually beed studied too have lower birth weights & are more likely too be born premature & with some hearing loss /: