The book by Leo Kofler (1837-1908), a famous Austrian singer and organist, is dedicated to the most important human instrument - the voice. The author offers a number of techniques and exercises to maintain the overall health of the body, with special emphasis on the respiratory organs and throat. According to Kofler, the breathing exercises he created will allow you to keep your voice in good shape, as well as avoid many ailments. The book will be of interest to vocalists, speakers, announcers, actors, students of music and theater schools, as well as a wide range of readers.