Book excerpt: This 224 page book, which is accompanied by online media with over 10 hours of content, gives an in-depth insight into Rob’s approach of working with subtractive synthesis. In 2001, Rob Papen began giving exclusive masterclasses teaching 'synthesizer sound design" in his studio. For these training sessions, Rob developed his own method to explain the secrets of subtractive synthesis, called "The 4 Element Synth". This masterclass training is now transformed into a combined book and online media package that also delivers numerous 'tips and tricks' which will help you to design and tweak your own sounds. Throughout the masterclass, a variety of hardware and software synthesizers are explored. We are sure this synthesizer sound design training is an eye-opener for every synthesizer player, from novice to pro. A must have for everyone who takes his sounds seriously!