By nature the human voice is beautiful, for the tendency of nature is always in the direction of beauty. Whatever is unlovely in singing, as in all else, is unnatural. True method is therefore never artificial in its action, but simple, because the natural is always simple.
Finally, no, not finally, but firstly and secondly and thirdly and perpetually, every student of singing and every teacher of it must constantly bear in mind the happy law:
| Title | Author | Published |
An Essay on the History and Theory of Music, and of the
Qualities and Capacity of the Human Voice |
Isaac Nathan |
London, 1823. |
| Elements of Vocal Science | Richard Mackenzie Bacon | London, 1824. |
| Orthophony; or the Cultivation of the Voice in Elocution | William Russell | Boston, 1859. |
| Vocal Physiology | Charles Alex. Guilmette | New York, 1860. |
Die Lehre von den Tonempfindungen als physiologische
Grundlage für die theorie der Musik |
H.L.F. Helmholtz |
Brunswick, 1863. |
The Sensations of Tone as a Physiological Basis for the
Theory of Music
(Translation of above) |
H.L.F. Helmholtz
(Translated by A.J. Ellis) |
London, 1875. |
| Sound | John Tyndall | London, 1867. |
| Principles of Elocution and Voice Culture | Benj. W. Atwell | Providence, 1868. |
The Voice, Its Artistic Production, Development and
Preservation |
George J. Lee |
London, 1870. |
| The Cultivation of the Speaking Voice | John Pyke Hullah | Oxford, 1870. |
| Voice Building | Horace R. Streeter | Boston, 1871. |
| Principles of Elocution and Voice Culture | Benjamin Atwell | Boston, 1872. |
| Hints for Pronunciation in Singing | Georgiana Weldon | London, 1872. |
| The Voice in Singing | Emma Seiler | Philadelphia, 1872. |
| The Voice as an Instrument | Ange A. Pattou | New York, 1878. |
| The Vocal Process | John Howard | New York, 1878. |
| Speech in Song | Alexander J. Ellis | London, 1878. |
| Voice and Vocalization | Wm. P. Robert | London, 1879. |
| The Human Voice and Connected Parts | Joseph Montgomery Farrar | London, 1881. |
| The Mechanism of the Human Voice | Emil Behnke | London, 1882. |
| Gymnastics of the Voice | Oskar Guttmann | Albany, 1882. |
The Art of Voice Production with Special Reference
to the Methods of Correct Breathing |
Ange A. Pattou |
New York, 1882. |
| The Old Italian School of Singing | Leo Kofler | Albany, 1882. |
| The Secrets of the Voice in Singing | Emilio Belari | New York, 1883. |
| Deep Breathing | Sophia A. Ciccolina | New York, 1883. |
| Artistic Voice in Speech and Song | Charles Lunn | London, 1884. |
| Voice, Song and Speech | Lennox Browne and Emil Behnke | London, 1884. |
| Modern Singing Methods, Their Use and Abuse | John Franklin Botume | Boston, 1885. |
| The Diaphragm and Its Functions | J.M.W. Kitchen | Albany, 1885. |
| The Voice from a Practical Standpoint | Edmund J. Meyer | New York, 1886. |
| The Hygiene of the Vocal Organs | Morrell Mackenzie, M.D. | London, 1886. |
| How to Sing | Wm. Henry Daniell | New York, 1887. |
| The Art of Breathing as the Basis for Tone Production | Leo Kofler | New York, 1887. |
| The Voice. How to Train It | Edward Barrett Warman | Boston, 1890. |
| Scientific Voice. Artistic
Singing and Effective Singing | Thomas Chater | London, 1890. |
| Voice Figures | Mrs. Margaret Watts Hughes | London, 1891. |
| The Human Voice; Its Cultivation | W.H. Griffiths | London, 1892. |
| The Philosophy of Singing | Clara Kathleen Rogers | New York, 1893. |
| The What and How of Vocal Culture | F. Rowena Medini | New York, 1893. |
| Exercises in Vocal Technique | John Franklin Botume | Boston, 1894. |
| Text-Book on the Natural Use of the Voice | George E. Thorp and William Nicholl | London, 1895. |
| Respiration for Advanced Singers | John Franklin Botume | Boston, 1897. |
| Voice Building and Tone Placing | Henry Holbrook Curtis, M.D. | New York, 1896. |
| Twenty Lessons on the Development of the Voice | George E. Thorp | London, 1896. |
Voxometric Revelation (The Problem Surrounding the
Production of the Human Voice Finally Discovered) |
Alfred Augustus North |
London, 1896. |
| The Art of Singing | Wm. Shakespeare | London and Boston, 1898. |
| The Rightly-Produced Voice | Edward Davidson Palmer | London, 1898. |
| How to Train Children's Voices | T. Maskell Hardy | London, 1899. |
| How to Sing (Meine Gesangskunst) | Lilli Lehmann | New York, 1902. |
| Scientific Tone Production | Mary Ingles James | Boston, 1903. |
| English Diction for Singers and Speakers | Louis Arthur Russell | Boston, 1905. |
| The Training of Boys' Voices | Clarke Ellsworth Johnson | Boston, 1906. |
| Voice Production in Singing and Speaking | Wesley Mills, M.D. | Philadelphia, 1906. |
| The Art of the Singer | W.J. Henderson | New York, 1906. |
| The Commonplaces of Vocal Art | Louis Arthur Russell | Boston, 1907. |
| The Singing of the Future | David Ffrangcon-Davies | London, 1908. |
| The Art of Singing and Vocal Declamation | Sir Charles Santley | London, 1908. |