Guillaume de machaut was a famous musician and poet. his most influential work was the notre dame mass. listen to the recording of la messe de nostre dame (or the notre dame mass) by machaut. remember that the medieval mass ordinary consisted of texts that are similar to those used in a modern mass. listen to the recording of this work. what are the five sung prayers of the mass ordinary? for each of the sung prayers, describe the musical style and its influence on the listener.