Systems of Notation

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Systems of Notation

Neumes.

Before the invention of a system for notating music in the ninth century, music was passed on from one person to the next only by aural transmission—that is, melodies were carried only in the memory, and learned by repeated hearing. A new monk, for example, would spend hours every day for several years learning by rote memory all of the chant melodies for the entire liturgical cycle, taught by the magister scholarum—the director of music. The first system of notating music was developed sometime during the Carolingian era after 800 for the purpose of transmitting information about vocal performance, the nuances of a singing style. Although this led eventually to the notation system still in use today, it did not have the same purpose as modern notation, that of presenting the basic information about pitch and duration. The earliest notes, called neumes, required the reader to know the melody already—its pitches and its rhythms. The information provided by the neumes indicated performance details such as which sounds to separate and which to join together; when to sing a steady pitch and when to slide the voice. Although its appearance is quite startling to those of us acquainted with modern notes, the notation transmitted its message very clearly by graphically representing what the voice was to do:

a straight line / signified to sing the note with a steady voice.
a curve ∼ indicated which way the voice was to slide.
a jagged line NA directed the singer to move his voice rapidly back and forth from a lower to a higher note.

The Guidonian Hand.

The next step in the development of notation came in answer to a desire on the part of the church leaders to speed up the learning of new material as well as to transmit the melodies more accurately. Over the centuries, the tradition of aural transmission had inevitably resulted in errors and variations in some of the melodies, and church officials wanted to

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standardize the repertory. The result was the placement of the neumes on a graph in which lines and spaces represented the notes of the singing scale. The first such experiment was by a clever monk named Guido, a magister scholarum in a Benedictine monastery in Arezzo, a small town in northern Italy. Guido's first invention was to assign the notes of the scale (mode) to the knuckles of his hand, so that by pointing to a particular knuckle he could direct the choir boys to sing a certain pitch. The "Guidonian Hand" caught on very quickly and even after the development of the staff it remained one of the easiest ways to teach chant, staying in use for hundreds of years.

Lines and Spaces.

Guido's next invention was to mark two parallel lines on paper, representing the pitches "c" and "f" which provided two exact places where the singer could orient his voice, with the other notes located either above or below these lines, graphically representing their relationship to the two known pitches. It is this system that evolved over the next several hundred years to the system of five lines and spaces currently in use. The notation of rhythm followed a somewhat different path. Rhythm in the earliest notation was controlled by the syllables of the text: one syllable was one unit of measure. If there was only a single note for a syllable, it received the entire unit of measure; two or more notes for a syllable all shared the single unit of time. Eventually a system was developed in which the shape of the note indicated its value:

NA was long.
■ was short.
◆ was shortest.

The basis of measure in this notation was its linkage to the heartbeat that was represented by the long note. The pace of the long note—its tempo—was declared to be the speed of the heartbeat of a healthy man at rest (approximately 60–80 beats per minute in modern terms). Although this system made it very easy to establish a basic tempo, in order to notate music that proceeded either slower or faster than the heartbeat required a complex set of neumes that were modified by stems, flags, and colors, and a set of other symbols (mensural signs) that could reassign the heartbeat to a subdivision of the long note. This system was somewhat simplified after the fifteenth century, but remnants of it were still in use well into the time of the German composer J. S. Bach. It was eventually replaced by the modern system that developed after the invention of the metronome in the early nineteenth century.