Music produces profound and lasting changes in the brain. Schools should add music classes, not cut them. Nearly 20 years ago, a small study advanced the notion that listening to Mozart’s Sonata for Two Pianos In D Major could boost mental functioning. It was not long before trademarked “ Mozart effect” products began to appeal to anxious parents aiming to put toddlers on the fast track to prestigious universities like Harvard and Yale. Georgla’s governor even proposed giving every newborn there a classical CD or cassette.