"A Well-Tempered Mind" investigates the intriguing connection between music education and brain development in children. Peter Perret and Janet Fox use the details of an innovative music education program for elementary school students to explore this fascinating relationship. "A Well-Tempered Mind" describes how the students of Bolton Elementary in Winston-Salem, North Carolina, and a local quintet worked together and then explains the ongoing research that focuses on how music engages the brain's cognitive capabilities, from memory and language to emotional processing. Music, "A Well-Tempered Mind" reveals, is a universal language that expands young minds in essential ways.