Guido of Arezzo
In the 12th century, a development in teaching and learning music in a more efficient manner had arisen. Guido of Arezzo's alleged development of the Guidonian hand, more than a hundred years after his death, allowed for musicians to label a specific joint or fingertip with the gamut (also referred to as the hexachord in the modern era). Using specific joints of the hand and fingertips transformed the way one would learn and memorize solmization syllables. Not only did the Guidonian hand become a standard use in preparing music in the 12th century, its popularity grew more widespread well into the 17th and 18th century. The knowledge and use of the Guidonian hand would allow a musician to simply transpose, identify intervals, and aid in use of notation and the creation of new music. Musicians were able to sing and memorize longer sections of music and counterpoint during performances and the amount of time spent diminished dramatically.
Palaeography
The prevailing type of book-hand during what in papyrology is called the Byzantine period, that is, roughly from AD 300 to 650, is known as the biblical hand. It went back to at least the end of the 2nd century and had had originally no special connection with Christian literature. In manuscripts, whether vellum or paper, of the 4th century found in Egypt are met other forms of script, particularly a sloping, rather inelegant hand derived from the literary hand of the 3rd century, which persisted to at least the 5th century; but the three great early codices of the Bible are all written in uncials of the biblical type. In the Vaticanus, placed in the 4th century, the characteristics of the hand are least strongly marked; the letters have the forms characteristic of the type but without the heavy appearance of later manuscripts, and the general impression is one of greater roundness. In the Sinaiticus, which is not much later, the letters are larger and more heavily made; and in the Alexandrinus (5th century) a later development is seen, with emphatic distinction of thick and thin strokes. By the 6th century, alike in vellum and in papyrus manuscripts, the heaviness had become very marked, though the hand still retained, in its best examples, a handsome appearance; but after this it steadily deteriorated, becoming ever more mechanical and artificial. The thick strokes grew heavier; the cross strokes of T and Θ and the base of Δ were furnished with drooping spurs. The hand, which is often singularly ugly, passed through various modifications, now sloping, now upright, though it is not certain that these variations were really successive rather than concurrent. A different type of uncials, derived from the Chancery hand and seen in two papyrus examples of the Festal letters despatched annually by the Patriarch of Alexandria, was occasionally used, the best known example being the Codex Marchalianus (6th or 7th century). A combination of this hand with the other type is also known.