The present recording constitutes more than just a new version of the Vespers. It is the first recording of the Vespers in the alternative version proposed by the composer, without concertato instruments. It reveals the underlying matrix of the work we all know, the 'original version' to which Monteverdi added concertato instruments for use in large-scale performances. Respecting the structure of the Office of Vespers, Ludus Modalis has chosen to frame the psalms with the antiphons corresponding to a Marian ceremony. The interpretation proposed here is one influenced by the Renaissance tradition. It places the work in perspective in a musical world at the point of equilibrium between prima and seconda prattica, between the achievements of tradition and the contributions of modernity. Ludus Modalis is a professional ensemble of five to twelve singers formed around the tenor Bruno Boterf. The group focuses principally on polyphonic Renaissance and early Baroque repertoire, with incursions into contemporary music. Apart from the absence of a conductor in the standard sense, the ensemble's specificity and it's 'sound blend' are the fruits of thoroughgoing attention to the parameters of a cappella polyphony: the development of an intonation aimed towards achieving a clarity of harmonic intervals; the attention paid to the text on the basis of the declamation and historical pronunciation; and the richness of the sonority achieved through the use of a variety of vocal timbres and colors, as well as a subtle mix of female, male, and even children's voices.