Subject
Singing -- Instruction and study books
5 free books about singing -- instruction and study, free to read online. Chapter 1 of any book is free, no account needed.
The mechanism of the human voice
Vocal Mastery
Talks with Master Singers and Teachers, Comprising Interviews with Caruso, Farrar, Maurel, Lehmann, and Others
The Voice: Its Production, Care and Preservation
The Renaissance of the Vocal Art
A Practical Study of Vitality, Vitalized Energy, of the Physical, Mental and Emotional Powers of the Singer, through Flexible, Elastic Bodily Movements
