The Micrologus

The Micrologus is a significant treatise on music theory written by the medieval philosopher and musician Guido of Arezzo around the 11th century. It outlines important concepts such as the system of musical notation, scales, and the use of intervals, which are essential for understanding how music is created and performed. Guido’s innovative ideas, including the concept of using a staff to notate pitch, laid the groundwork for modern Western music notation. The Micrologus contributed to the way music was taught and understood, influencing the development of music education and theory in subsequent centuries.