Francis E. Howard, The Child-Voice in Singing
“ If the voices of children were never entrusted to any save professional voice-teachers, a very few hints upon their management would perhaps suffice, for the ear of the teacher of voice and singing is presumably trained in the differentiation in tone-quality occasioned by changes in the action of the vocal mechanism. When, however, we reflect that of the thousands of teachers in our public schools very few, indeed, have ever heard of voice-registers, and much less been accustomed to note distinctions in tone-timbre between them, the need of a detailed plan of procedure is seen. ”
