Music and Brain Size

Neurologist Oliver Sacks on NPR's Fresh Air spoke about how musical training (at little as 1 year) has a visible effect on the size of certain areas of the brain. He mentioned several lobes, and also the Corpus Callosum, the bundle of nerve which connects to two sides of the brain. This seems significant: We can increase the amount of right brain/left brain connectivity by studying music. Seems like this would be a great help to being able to think with both aspects (right brain/creative and left brain/rational) at the same time.