This brings out three striking facts. First, that the student learned to use his voice by imitating the voice of the master. Second, that the initial work of "voice placing" was merely an incident in the training in sight singing and the rudiments of music. Third, that "voice placing" was considered of too little importance to claim the attention of masters of the first rank. This feature of instruction, so important now as to overshadow all else, was at that time left to masters of a lower rank.
This passage is followed by a short discourse on the rudiments of Sol Fa, a subject of only academic interest to the modern student. We are so thoroughly accustomed nowadays to the diatonic scale that it is almost impossible for us to understand the old system of Muance or Solmisation. Suffice it to say that only four keys were known, and that each note was called by its full Sol-Fa name. Thus D was called D-la-sol-re, C was C-sol-fa-ut, etc. In studying sight singing, the student pronounced the full name of each note in every exercise. Instruction in singing began with this study of sight reading. In the course of this practice the student somehow learned to produce his voice correctly.
Tosi does not leave us in doubt what was to be done in order to lead the pupil to adopt a correct manner of tone-production. "Let the master do his utmost to make the scholar hit and sound the notes perfectly in tune in Sol-Fa-ing.... Let the master attend with great care to the voice of the scholar, which should always come forth neat and clear, without passing through the nose or being choaked in the throat." To sing in tune and to produce tones of good quality,—this summed up for Tosi the whole matter of tone-production.
Many teachers in the old days composed Sol-Fa exercises and vocalises for their own use. Tosi did not think this indispensable. But he points out the need of the teacher having an extensive repertoire of graded exercises and vocalises. To his mind these should always be melodious and singable. "If the master does not understand composition let him provide himself with good examples of Sol-Fa-ing in divers stiles, which insensibly lead from the most easy to the most difficult, according as he finds the scholar improves; with this caution, that however difficult, they may be always natural and agreeable, to induce the scholar to study with pleasure."
How many months of study were supposed to be required for this preliminary course we have no means of judging from Tosi's work. At any rate the combining of the registers was accomplished during this time. Tosi's description of the registers is very concise. "Voce di Petto is a full voice which comes from the breast by strength, and is the most sonorous and expressive. Voce di Testa comes more from the throat than from the breast, and is capable of more volubility. Falsetto is a feigned voice which is formed entirely in the throat, has more volubility than any, but of no substance." He speaks of the necessity of uniting the registers, but gives no directions how this is to be accomplished. Evidently this seemed to him to present no difficulty whatever.
In this early period of instruction the pupil was exercised in both portamento and messa di voce. "Let him learn the manner to glide with the vowels, and to drag the voice gently from the high to the lower note.... In the same lessons let him teach the art to put forth the voice, which consists in letting it swell by degrees from the softest Piano to the loudest Forte, and from thence with the same art return from the Forte to the Piano. A beautiful Messa di Voce can never fail of having an excellent effect."
Only the first chapter of Tosi's book is devoted to this initial study. That the student was expected to make steady progress as a result of this study is evident from the closing sentence of this chapter. "The scholar having now made some remarkable progress, the instructor may acquaint him with the first embellishments of the art, which are the Appoggiaturas, and apply them to the vowels." The remainder of the work is devoted almost entirely to the embellishments of singing. Here and there an interesting passage is found. "After the scholar has made himself perfect in the Shake and the Divisions, the master should let him read and pronounce the words." (Shake was the old name for trill, and division for run.) Again, "I return to the master only to put him in mind that his duty is to teach musick; and if the scholar, before he gets out of his hands, does not sing readily and at sight, the innocent is injured without remedy from the guilty." This injunction might well be taken to heart by the modern teacher. Good sight readers are rare nowadays, outside of chorus choirs.
Mancini begins his outline of the course of instruction in singing with this striking sentence: "Nothing is more insufferable and more inexcusable in a musician than wrong intonation; singing in the throat or in the nose will certainly be tolerated rather than singing out of tune." This is followed by the advice to the teacher to ascertain beyond a doubt that a prospective pupil is endowed with a true musical ear. This being done the pupil is to begin his studies by sol-fa-ing the scales. "Having determined the disposition and capacity of the student with respect to intonation, and finding him able and disposed to succeed, let him fortify himself in correct intonation by sol-fa-ing the scale, ascending and descending. This must be executed with scrupulous attention in order that the notes may be perfectly intoned."
In this practice the quality of the tone is of the highest importance. "The utmost care is necessary with the student to render him able to manage this portion of his voice with the proper sweetness and proportion." Mancini takes it for granted that the student will progress steadily on account of this practice. "When the teacher observes that the pupil is sufficiently free in delivering the voice, in intonation, and in naming the notes, let him waste no time, but have the pupil vocalize without delay."
Regarding the registers, Mancini disagrees with Tosi and names only two. "Voices ordinarily divide themselves into two registers which are called, one of the chest, the other of the head, or falsetto." His method was to exercise the voice at first in the chest register, and then gradually to extend the compass of the voice upward. "Every student can for himself with perfect ease recognize the difference between these two separate registers. It will suffice therefore to commence by singing the scale, for example, if a soprano, from G to d;[10] let him take care that these five notes are sonorous, and say them with force and clearness, and without effort." For uniting the registers, "the most certain means is to hold back the tones of the chest and to sing the transition notes in the head register, increasing the power little by little."