If you want to listen to the music of prenatal education, you don't have to listen to some famous songs, even your favorite pop songs. It's good to listen comfortably, but remember not to listen on your stomach, which will affect your hearing. If you use a player, try to choose an mp3 player or a tape recorder. Cell phones and computers are not recommended. The player should be placed one meter away from your body. I am a pre-school education major and have an early education certificate. I hope the answer will help you.