A Monk Impatient With Slow Singers

Guido was born around 991, probably in or near Arezzo in Tuscany, and entered the Benedictine monastery of Pomposa on the Adriatic coast, where he taught chant to novice monks. The existing method of instruction relied entirely on oral transmission and rote memory, and Guido, frustrated at how many years it took an ordinary singer to master the chant repertory by ear alone, set about designing a notation and a teaching method that could shrink that timeline drastically. His colleagues at Pomposa, by his own account, resented the innovation enough that he eventually left.

He found a more welcoming patron in Bishop Tedald of Arezzo, who brought him to the cathedral school there around 1025 and gave him the freedom to complete his system. Guido's reputation reached Rome itself: tradition holds that Pope John XIX summoned him to demonstrate his teaching method in person, and was won over by how quickly an unfamiliar singer could learn new chant using it. Guido's own account of his methods survives in his treatise Micrologus, completed around 1026 and dedicated to Bishop Tedald, along with a shorter didactic letter, the Epistola ad Michaelem, addressed to a former pupil.