Re: a question based on science.....
I do not believe many studies, artistic expressions, or physicals acts actually are isolated in one hemisphere over another. When reading and playing music, you are counting, reading ahead and calculating what you are going to do.
This seems to me that both the right and left hemispheres are being employed. When drawing or painting you have to make a few calculations and switch between the right and left hemispheres.
Programming is usually associated with the math and sciences, yet it is a very creative expression.
When doing math calculations, I sometimes have to be very creative in finding solutions. There were times when I would actually dream about Calculus problems that were bothering me during waking hours. The right hemisphere is supposed to be responsible for dreaming and the left is supposed to be responsible for math and science.