Cet ouvrage est une édition de l'antiphonaire de Saint-Grégoire, qui est l'un des plus anciens livres de musique chrétienne. Il contient des textes liturgiques et des compositions musicales, ainsi qu'une introduction sur l'histoire de l'antiphonaire et son importance dans la musique chrétienne. Cette édition comprend également des annotations et des corrections, basées sur les dernières recherches sur l'antiphonaire. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.