In all cases, illness is caused by the botulinum toxin produced by the bacterium C. botulinum in anaerobic conditions and not by the bacterium itself. The pattern of damage occurs because the toxin affects nerves that fire (depolarise) at a higher frequency first.
BMT (Bachelor of Music Therapy) Voice majors in this degree often have music skills and an interest in the science and medicine. Future vocal music majors are often the top singers in their high schools. It is not unusual for talented teens to sing a variety of vocal styles in high school.
The ONE THING that will improve your singing immediately. January 20 2016 Music Education. Over the decades I have heard thousands of singers audition, perform, and practice. As a director of choirs and musical shows I followed how singers sounded after trying various singing techniques, vocal methods in books, and expensive coaches.