Book excerpt: The vocal repertoire of the twentieth century--including works by Schoenberg, Boulez, Berio, Larsen, and Vercoe--presents exciting opportunities for singers to stretch their talents and demonstrate their vocal flexibility. Contemporary composers can be very demanding of vocalists, requiring them to recite, trill, and whisper, or to read non-traditional scores. For singers just beginning to explore the novelties of the contemporary repertoire, Exploring Twentieth-Century Vocal Music is an ideal guide. Drawing on over thirty years of experience teaching and performing the twentieth century repertoire, Sharon Mabry has written a cogent and insightful book for singers and voice teachers who are just discovering the innovative music of the twentieth century. The book familiarizes readers with the new and unusual notation systems employed by some contemporary composers. It suggests rehearsal techniques and vocal exercises that help singers prepare to tackle the repertoire. And the book offers a list of the most important and interesting works to emerge in the twentieth century, along with suggested recital programs that will introduce audiences as well as singers to this under-explored body of music.