Dr. Jahn is a Board-certified otolaryngologist who practices in New York with a special focus on the care of professional voice patients. He has written and lectured widely on the care of singers. Dr. Jahn has had a 30-year association with the Metropolitan Opera as covering physician, has toured with the company, and is Medical Director at the Met. In addition to clinical care, Dr. Jahn has published numerous books and articles, and writes a monthly column in Classical Singer Magazine on health issues.