Book excerpt: Since the publication of the first edition of A Spectrum of Voices there have been significant advances in voice studies. Prominent members of the new generation of voice teachers join their voices with now-canonized teachings. Asking questions about technology, pedagogy, and stylistic changes within the field, Elizabeth L. Blades brings the wisdom from the past and present to voice students at all levels. A Spectrum of Voices draws from the brilliance and combined experience of an elite group of exemplary voice teachers, presenting interviews from more than twenty-five notable teachers, six of them new to this second edition. Voice teachers offer valuable insight into their teaching philosophies, the types of auxiliary training they recommend to their students, and how they structure their lessons. This second edition also addresses significant technological advances of the past twenty years, especially the impact on vocal performance and pedagogy. A quick-and-handy reference for the studio teacher, this book also serves as a text for vocal pedagogy courses and as an essential supplement for physiology and vocal mechanics, teachers and students of singing, music educators, and musical theater performers.