Abstract
<jats:p>This fourth volume of the selected musical pieces from the Hren choirbooks presents a setting of the Ordinary by Jean Guyot de Châtelet (c. 1520–1588), a leading musician in mid-sixteenth century Liège active for a brief time at the Imperial court in Vienna: namely, a Missa Pastores quidnam vidistis. The Mass is of the parody or imitation type, derived from a pre-existing polyphonic composition: specifically, Jacobus Clemens non Papa’s (c. 1510/15–1555/56) five-part motet Pastores quidnam vidistis. Guyot’s Mass forms part of the earliest stratum within Hren’s choirbook repertory and serves as evidence that in the territories of Inner Austria compositions by esteemed masters — crafted approximately fifty years earlier — continued to be held in high regard.</jats:p>