What is more joyful than watching a toddler rock out, body and soul?

Music stimulates nerve connections between brain cells that play an important role in cognitive development. Music & rhythm is a natural boost to a child's creativity. 

Children with strong language ability have shown enhanced brain activity in the area that processes music. Numerous studies link enhanced spatial skills and math skills to musical ability.

Most importantly, music is in the human soul. Studies find people who enjoy music, also experience joy and have a higher happiness factor, on average.