In 1648 Heinrich Schütz published a collection of 29 motets with five to seven parts titled 'Geistliche Chor-Music? (Sacred Choir Music). Here, the term 'Chor? (choir) refers not only to a (large) vocal ensemble but, more generally, to a group of musicians, vocal or instrumental. As explained by Schütz in the foreword he published with the collection, all parts of the motets can be performed vocal…