The document discusses music of the medieval period, including Gregorian chant which was approved by Pope Gregory I and was monophonic plainchant with modal characteristics. It also discusses troubadour music which originated in France and was usually monophonic, sometimes with improvised accompaniment, telling stories of chivalry and courtly love. Neume notation was used to notate music heard aurally using symbols. The document encourages singing a monophonic style of medieval music in groups for a class activity.