El Liber Magnificarum del polifonista Miguel Navarro impreso por Carlos Labayen en 1614

The book printed with polyphonic music in a workshop in Pamplona at the beginning of the 17th century, in the meantime other similar europeans workshops of equivalent expertise, constituted an exceptional event. Testimony of this relevant event, is that in Navarra some form of musical was dated from over half a century ago, however over two centuries had to pass for a similar printed work to come to fruition. The present article analyses the editorial, technical and commercial background surrounding the Liber Magnificarum.