Chants of the Roman Office
Richard L. Crocker
Abstract Chant for the Roman Office consists mostly of antiphons and responsories, in roughly equal proportions. Of these two types, are simpler musical structure, can well be considered first; they not, however, necessarily older than responsories. Around middle ninth century, close to time archetype, Gregorian seem number around 1,600. It has yet determined how many came from Rome, due Frankish cantors, either as new melodies or adaptations ones-or pre-Carolingian Gallican melodies.