An Englishman and Londoner, Hermann Klein (1856-1934) was a prolific writer, voice teacher, and student of the legendary voice teacher Manuel GarcIa (1805-1906). After arriving in New York City in 1901 to teach GarcIa's method, Klein became the Chairman of the newly-formed National Association of Teachers of Singing. To further the organization's goal of bringing standards and certification to the singing teacher profession, Klein wrote an 84-page singing manual utilizing the new technology of the gramophone. In doing so, Klein documented the studio teaching of the father of voice science,...