The earliest suggestion of the staff that we have is that in the work of Hucbald already mentioned, in which he proposed to print the words in the spaces of the staff of eleven lines, placing each syllable according to its pitch ([p. 141]). The staff, in connection with neumes, as given above in [Fig. 34], probably came into use about the same time as that when Hucbald's book was written, but it was not until the days of Guido of Arezzo that the staff was employed in anything like its modern form, nor is it certain that Guido had anything to do with introducing it. In one of the manuscripts of his book letters are written upon the lines and spaces, and in another the neumes are given. The note head was not invented until some little time after his death, probably about fifty years.

Fig. 36.

NOTATION OF THE FRENCH TROUVÈRES.

By the time of Franco of Cologne, the four-lined staff with square notes had come into use, the notes having the value already assigned them in the chapter upon Franco of Cologne. (See [p. 145].) The place of fa was marked by a clef, and with some few exceptions all the musical notation from this time forward is susceptible of approximate translation. The term approximate is used above by reason of the fact that no sharps or flats were written until long after this period, but it is thought that they were occasionally interpolated by the singers quite a long time before it became customary to put them into the notation. In this way, for example, a piece of music beginning and ending on the degree appropriate to fa might be brought within the limits of the key of F by the singer changing B natural to B flat wherever it occurred. Our information in regard to this practice is extremely limited, and, in fact, rests upon two or three detached hints. The signature was not employed until some centuries later.

As already mentioned in [chapter XI], there was no measure notation for a long time after Franco's death. The data are uncertain concerning the exact time when the bar began to be used to mark the measure. Its earliest use was that of marking the end of the music belonging to a line of poetry. This is the same use as now made of the double bar in vocal music. In fact, everything points to the progressive development of music in all respects, and the development of what we might call self-consciousness in musicians, whereby each succeeding generation sought to place upon record a greater number of particulars concerning their music, and to leave less and less to accident or tradition. This progress has gone on until the present time, when two particulars of our music are exactly recorded—the pitch and the rhythm. The exact relation of every tone to the key note is ascertainable from our musical notation, and the precise degree of rhythmic importance appertaining to each tone according to its place in measure and in the larger rhythms. We are still lame in the matter of expression, and in pianoforte music also in regard to the application of the pedals. Here our notation affords only a few detached suggestions. If the master works of the modern school could be noted for expression as completely as for pitch and rhythm, the labor of acquiring musical knowledge would be very greatly diminished.

The four-line staff has remained in use in the Catholic Church until the present time, and with it the square notes. It is generally called Gregorian, and by many is supposed to have been invented by Gregory the Great; but as a matter of fact, about six centuries elapsed after his death before this square-note notation came into use. The five-line staff came into use about 1500. Information is wanting as to the causes which led to its adoption in preference to the four-line notation so long in use. The clef for do (C clef) remained in use until very lately, and is still used by many strict theorists, being written upon the first line for the soprano, the fourth line for the tenor, the third line for the alto. The G clef, also, when first introduced, was often written upon the third or the first line; the F clef, moreover, was not definitely established on the fourth line until toward 1700. In the scores of Palestrina's work, now published in complete form, there are pieces written with the soprano in the G clef upon the first line, the alto in the C clef upon the second line, the tenor in the C clef upon the fourth line, and the bass in the F clef upon the third line. This, while affording the eye two familiar clefs, the treble and the bass, places them in such a way as to practically make it necessary for the modern reader to transpose every note of the composition in all the parts, and, in fact, to effect a transposition for each part upon principles peculiar to itself.

The progress of classification is distinctly seen in the use of seven letters instead of fifteen, affording a tacit recognition of the most essential underlying facts of harmony—the equivalence of octaves. The staff, however, affords the eye no assistance at this point, since the octaves of notes occupy relatively entirely different positions upon it, the octave of a space being invariably a line, and the octave of a line a space. Moreover, the octave of a bass line is always very differently located when it falls upon the treble staff, and, vice versa, the octave of a treble note falling in the bass is very differently placed. If a notation had to be made anew it would no doubt facilitate matters to make use of a staff so planned as to bring out the equivalence of octaves more perfectly. A recent American designer, Mrs. Wheeler, has proposed a double staff of six lines, divided into two groups of three, for the treble and bass, thus presenting for the piano score four groups of three lines each, separated by smaller or larger intervals. Upon such a staff every tone would fall in the same place upon the three lines in every octave, the octave of the first line of the lower three would be the first line of the second three, and so on.

This, however, is to anticipate. The smaller rhythmic divisions of the measure were very little used in the old music which, if not sung in slow time, was at least written in long notes, and the smaller varieties of notes are the invention of a period perhaps rather later than that at which we have now arrived. They belong to the elaborate rhythmic construction of the music of Händel, Bach, Scarlatti and Haydn.