Betty Jeanne Chipman and Joseph M. Hoffman

Betty Jeanne Chipman was an adjunct professor of music at the University of Utah for thirty years, and her students went on to win major awards and competitions, including the Metropolitan Opera and the San Francisco Opera. Joseph M. Hoffman is listed as a coauthor of the book "Singing With Mind, Body, and Soul: A Practical Guide for Singers and Teachers of Singing," but I could not verify additional biographical details from the provided sources.