Daniel J. Levitin's book 'I Heard There Was a Secret Chord: Music as Medicine' explores music's healing potential, detailing its effects on mental health, movement disorders, and dementia, while also addressing the high-stress lifestyle of musicians. Levitin highlights music's ability to stimulate neurogenesis, improve mood, and enhance quality of life, suggesting AI could personalize music therapy. Despite the challenges faced by musicians, Levitin emphasizes music's overall benefits, including pain relief and immune system support.