It's not good for the ears, but it can regulate people's mood. Sometimes when I can't sleep, I will listen to some songs with gentle tunes. I think (I am used to listening to music when I sleep at night) it should be helpful to sleep. You can play some light music or light piano music, but be careful not to leave it for too long, which will also affect children's sleep. However, if you want to talk about cultivating children, I suggest playing it during the day, and the sound should be specially grasped. Don't worry, it's okay. There are many prenatal music, which is used to cultivate children.