Why Classical Music?
While infants show a predilection for music played while still in the womb, classical music often proves better for brain development than the mother’s favourite rock and roll tunes.
Since classical music is more complex in structure, instrumentation and harmony,
it primes the brain with pathways needed for other cognitive tasks.
According to Dr. Diane Bales, any kind of music helps build musical pathways in the brain and may help infants relax.
The Washington Times suggests that whether it's classical, pop, jazz, blues or Mom's favourite tunes,
it's the complexity of music itself that offers brain-building benefits.
Zero to Three: Brain Development
Washington Times: Music and Babies: The "Mozart Effect" and More