This article proposes an intertextual reading of the liturgical music books printed in Mexico during the second half of the 16th Century, in the establishment of the Catholic rite in the Americas, as well as in the reception of the principles of the Counter-Reformation promoted by the Council of Trent. The approach to the diverse elements of liturgy contained in them (calendar, texts, melodies, the rank of the feasts, structures) by means of a comparative methodology, allows observing the differences and similarities among these books, changes and continuities in time, as well as a significant degree of variability among them. On the other hand, based in consideration of these printed books as official texts in the transmission of different traditions in the celebration of Divine Cult, these were contrasted with manuscript sources, of a more practical dimension: the choir books of Mexican Cathedral. The approach revealed significative discordance in some elements. This work intends to position these sources as fundamental instruments for the study of liturgical chant in the different scopes (secular and regular) of the Church in New Spain.