Note 25 — Chapter II · THE POLYPHONIC PERIOD

These three classes comprised (1) those forms in which all voice-parts had the same words, as the Cantilena, the Rondel or Rota, the Organum communiter sumptum; (2) those in which each part had its own special words, as the Motet; and (3) those in which some parts had words and others merely vocalized, as Hoquet or Ochetus, the Conductus, and Organum purum vel proprie sumptum. Organum purum was the oldest form and was held in great reverence by the earliest writers.