2. Pérotin
• Late 12th- Early 13th Century
• Called “Pérotin the Great”
• He is French and member of Notre Dame
school of polyphony
• Composed organum, which added voices
above and below chant to create perfect 4ths
and 5ths
3. Organum
• Upper voices use rhythmic modes
• Duplum- two voices
• Triplum- three voices
• Quadruplum- four voices
• Pérotin began first writings in triplum and
quadruplum
• Voice Exchange was used