Rob Papen has set the bar for teaching Subtractive Synthesis. The 4 Element Synth is truly a fantastic teaching tool to assist anybody seeking to learn the fundamentals of programming a synthesizer, be it hardware or software. The reader will immediately recognize the quality of the hardcover book and appreciate the thoughtful layout of lessons therein and on the accompanying four DVDs. The combination of the two approaches, book and DVD, are the best possible visual and audio learning experience. Rob's lessons take you through a detailed and clear step by step process to ensure you understand the presented material. The 4 Element Synth teaching method will give you the knowledge to set-up your own sounds, manipulate parameters, and understand parameter actions. You will be on your way to mastering your hardware and software plug-ins, making new sounds, and exploring more advanced techniques. Kudos go to Rob for taking the time to bring his Masterclass to those who are looking to learn the "must know" fundamentals of subtractive synthesis. Having access to excellent learning tools is a must to improve one's skill set. If you are one to enjoy a personal reference library then this book belongs on your bookshelf. The 4 Element Synth is a "sound investment" for sure.