This final section concludes with an argument for the continued use of instruments, and especially the organ, in the liturgy of the modern church.
The final portion of De Organographia is the celebrated "Theater of Instruments," published separately the following year.
This collection of woodcuts is justly celebrated for its detailed and accurate depictions of contemporary musical instruments of all sorts.
The final published volume, also in German, is a mine of information on performance practice of Praetorius's day.
Many of his ideas have formed the basis for today's "historically informed" performance of the music of his contemporaries, including Monteverdi.