Modular synthesizers are among the most esoteric of devices among electronic music instruments. They are built from separate modules that taken individually would not necessarily output any sound, and they come to life only when interconnected via a tangle of cables. To produce a basic sound, the musician electrician needs to understand how sound synthesis works first - that's the prerequisite to creating a valid signal path across the three different layers inherent to modular systems: the audio path, the control voltages, and the gate signals. That is why composing on a modular system is complex, but fascinating! With a modular synthesizer, you are the instrument maker and the performer. Sometimes, the instrument you have created is so complex that you do not need to think about the musical performance anymore, because the sound itself has become the music!