What role did chivalry play in medieval court life? How was this reflected in the music?

Western European medieval society

. In what ways did composers of chant vary their melodies?
. How did Hildegard of Bingen instill her music with emotional expression?
. What role did chivalry play in medieval court life? How was this reflected in the music?
. How are medieval instruments similar to today’s instruments? How are they different?
. What ideas did Western European medieval society borrow from the Middle Easty did composers of the earliest polyphony use chant as the basis for their works?