Music Study & Brain Development
Music Improves Brain Development
Does Music Affect Teens?
Brain Function and Music - How Does Music Affect The Brain and Learning
Effects of Music on the Brain: Cognitive Development, Verbal Skills, and Emotional Intelligence
Music Psychology & Behavior: Effects of Sound on Shoppers and Restaurant Patrons
Music and Brain Development: What You Can Do At Home
Music Education and Childhood Brain Development: Research Shows It's Good for Learning
Music Enhances Your Child's Brain Development - Necessity of Music Education
Using Music to Boost Your Baby's Development

The following all have links to a variety of music and brain development research and articles:

Scholarly Articles on Brain Developement
Science Daily