Less is known about the chants of the Office. There are only about half as many melodies among the Old Roman Responsories as in the Gregorian repertory. Originally, Old Roman Repertories repeated the respond in full after the verse.
There is less understanding about the chants used during the Office. The Old Roman Responsories have around half as many melodies as the Gregorian repertoire. Traditionally, the Old Roman Repertories would repeat the respond following the verse sung.