Guide to Modular Worlds tries to capture and explain the fascination of sound synthesis and modular components in today‘s environment Today, musicians live in a digital world where a full-fl edged studio can live in a single laptop. At the same time, we are surrounded by a plethora of electronic instruments and eff ects. These can be rare or popular items from the past, a choice of constantly developed hardware or improved virtual solutions … or unique constructions from a constantly emerging market of small manufacturers that have risen since the introduction of the Eurorack format