Gregorian chant is also known as plainchant or plainsong and is a form of monophonic, unaccompanied singing. It was developed in the Catholic church, mainly during the period 800-1000, and is based on Eastern models of Byzantine chant. Gregorian chant takes its name from Pope St. Gregory the Great, who is believed to have brought it to the West. In what ways is Gregorian chant different from modern music? Discuss