While it is unclear whether music has an actual effect on the fetal development, some studies indicate that fetuses can hear and react to sound. At this point, no research supports the idea that playing music when your baby is in the womb makes it smarter.
However, if you do wish to play music to your unborn child, here’s how you should do it:
It’s best to play music in the stereo during the day. Do not use headphones on your belly as it may overstimulate your baby.