In this review, the scientists analyzed more than a dozen clinical trials and found that music therapy helped stabilize premature babies’ breathing rate while they stayed in the neonatal intensive care unit.
The researcher Lucja Bileninik explained: “Full-term infants can recognize the mother’s voice at birth. This connection is important to foster in premature infants, whose last months of gestation are instead spent outside the womb.”
According to another scientist who wasn’t involved in the review, Joanne Loewy, “good music therapy” involves similar elements to the mother’s heart beating: a simple, predictable rhythm, periodic lulls, and the familiar sound of mom’s voice.
More details here.