That nonsense was debunked a while back.
i just lived my life and listened to music i liked
not smart but the baby may find it comforting after he is born because it is familiar…
Actually it is proven that any stimulus outside of the womb can affect the baby. Its not necessarily going to make the baby smarter but it helps to expose the fetus to good things and pleasant sounds you never know what it might do unless you try.
well supposedly the music u listen to the baby hears and it ends up liking that music as well for example if u listen to rock the baby will hear it and it will grow up to like rock and alternative music