Syntagma Musicum

''Syntagma Musicum (1614-1620)'' is a musical treatise in three volumes by the German composer, organist, and music theorist Michael Praetorius. It was published in Wittenberg and Wolfenbüttel. It is one of the most commonly used research sources for seventeenth-century music theory and performance practice. The second volume, ''De Organographia,'' illustrates and describes musical instruments and their use; this volume in particular became a valuable guide for research and reconstruction of early instruments in the twentieth century, and thus an integral part of the early music revival. Though never published, Praetorius intended to write a fourth volume on musical composition.

The three extant volumes are: * I: ''Musicae Artis Analecta'' * II: ''De Organographia'' * III: ''Termini musicali'' Provided by Wikipedia