I bought this CD when I was 4 months pregnant with my first baby, Irene. From that time on, every single day, I would religiously listen to the music and let my baby listen to it, too(through earphones taped to my tummy.) Now that Irene is 4 months old, we both still listen to it frequently, and her response to the music is as if she knows the songs by heart! I believe it has also made my child more attentive and intelligent as a baby, even as a newborn. I love this CD, and will treasure it as one best purchases I made for my daughter and for myself.