In the 11th century, the musical wealth of the church was a fragile property, transmitted only through memory in a slow process of education that limited artistic growth. This required a decade-long time investment, a costly luxury for the enterprise of sacred music, stifling its development and opportunity. A monk named Guido of Arezzo viewed this inefficiency as a poor investment and created a solution. His revolutionary technology was a four-line staff, a monumental discovery that made pitch