The present volume. Tropes du Sanctus, is a Corpus Troporum edition of liturgical tropes to the chants of the medieval Roman mass. This edition, the second in the series of Ordinary tropes, is based on 137 manuscripts dating from the tenth through the thirteenth centuries.

The volume encompasses three major parts: an introduction, the edition and an inventory. In the introduction is presented the base chant and the medieval interpretations of the text. It also contains a study of the compositional forms of the tropes added to this chant, followed by a study of the different themes of the trope texts and a short summary of the various forms of versification.

The central part of the volume consists of a critical edition of 174 texts added to the Sanctus chant. The Sanctus tropes are edited as unites, as are the Agnus Dei tropes in volume IV, and not like elements of Proper tropes.

The edition is followed by a table which corresponds to the tables of the volumes of Proper tropes, presenting all combinations of the trope verses of each manuscript.

The third major part of the volume is a detailed inventory of the repertories of Sanctus tropes in the manuscrips of the edition. It provides information on the localisation, rubrics and structure of each single trope, as well as the melody of the specific Sanctus chant connected to each trope.

Finally, the volume contains several indices, a bibliography and 32 plates.