When I pulled this out and turned it on the first thing I thought was, "Wow, it's really quiet."
Regardless my daughter started banging happily on it and really liked the lights. As a matter of fact she went pretty nuts on this thing, loved it at first.
And though we could barely hear it she seemed pretty happy so we tied it into the crib.
Here's the problem. At 7 months my daughter has recently learned to pull herself up and is trying desperately to get out of her crib. She found out pretty quickly that she could wedge the piano on the mattress and use it as a stepping stool. Now the key board bends under her weight but it does give her a bit of a boost. Much as I'd love to leave it in because she likes it, anything that can be climbed on needs to be taken out of the crib so out it went. We left it on the floor for her to play with and after a few days she got bored with it.
My guess is that it's too quiet, even on the loudest settings. I did try replacing the batteries and nothing.
Not sure if i got a bad model but with out the feedback it's just not that interesting to her.
I'm giving it 3 stars since she really did seem to like it and other reviews don't seem to have my issue.
However!
If your baby can pull themselves up to standing, I wouldn't recommend this for the crib, could lead to some bumps and bruises.