When we sing, large parts of our brain “light up” with activity, says Sarah Wilson, a clinical neuropsychologist and head of the School of Psychological Sciences at the University of Melbourne. She led a study which looked at how the brain reacts when we sing by giving volunteers of varying vocal ability MRI scans as they warbled.
“There is a singing network in the brain [which is] quite broadly distributed,” Wilson says. When we speak, the hemisphere of the brain dealing with language lights up, as we might expect. When we sing, however, both sides of the brain spark into life.