Dr. Alfred Tomatis, who will be discussed in the next paragraph, used fiber optic cameras to observe the movement of the fetus in regard to sound. Though the particular muscle moved varied in each child, each time the same phoneme was sounded, the same muscle responded! This sensory-motor response allows the fetus to begin learning language in utero. This information suggests that prenatal exposure to music can be used to enhance a baby’s development, and perhaps alleviate or minimize some developmental delays (Campbell, 2000).