Reign of Pope Gregory I (jan 1, 590 – jan 1, 604)
Description:
Note that it's way before rhythmic notation. However, he was mythologically credited with inventing the Roman chant repertoire, hence "Gregorian" chant. But no one person composed the chants--it was a huge collective enterprise.Added to timeline:
Date:
jan 1, 590
jan 1, 604
~ 14 years