Harry Ballan is a senior partner at the international law firm of Davis Polk & Wardwell LLP and a director of the Institute for Music and Neurologic Function (IMNF), founded by Oliver Sacks. He is engaged in numerous research projects on music and the brain and has used therapeutic music to treat hundreds of patients with psychiatric and neurological disorders. At IMNF, he is the director of the program for PTSD and Traumatic Brain Injury in Veterans, in which capacity he has worked with the U.S. Veterans Administration and Congress. He has taught at Yale, Columbia and NYU Universities. He was a student at the Conservatoire Américain, and is a Fellow of the Tikvah Advanced Institutes. Dr. Ballan holds a B.A., M.A., M.Phil. and Ph.D. from Yale University, and a J.D. from Columbia University.