Sustaining a healthy voice used to be as mysterious as the power of voice itself.  Modern science has revealed much about the vocal mechanism and its health requirements, but simple information for the average voice user has remained hard to find and harder to trust.  In "Everyday Voice Care: The Lifestyle Guide for Singers and Talkers," respected voice therapist Joanna Cazden brings together a wealth of practical tips and advice to help keep your own expressive voice in top working order.  Paperback, 196 p.