Muffat Apparatus Musico-Organisticus

Apparatus Musico-Organisticus is a set of 15 pieces for solo organ composed in 1690 by Georg Muffat. It was first published that same year. The pieces are 12 Toccatas, a Ciacona, a Passacaglia, and the "Nova Cyclopedeias Harmonica" Air and Variations. The composer dedicated the piece to Leopold I, Holy Roman Emperor.