It relaxs my daughter n puts her to sleep
I'm still pregnant and I have noticed it calms my baby when I put headphones on my stomach. I feel like it puts him to sleep
They didn't work for my baby. We ended up having to get help from a sleep specialist and she said music, lullabys, vinrations, white noise are all very distracting for a baby trying to sleep. I took all of her advice because it worked for me but see what works for you.
For my daughter it worked like a charm lol she was so hard to put to sleep to but once I put on her CD she was out. .. still till this day it works but she like classical music now she prefers that cuz she's bigger she is 6 almost 7