Smirnov demonstrates Theremin's Rhythmicon - YouTube
Andrei Smirnov demonstrates Leon Theremin's Rhythmicon (Ритмикон) - electronic musical instrument originally developed and produced by Leon Theremin in 1931....
Home Recording Studio Build It Like The Pros
(Second Edition) by Rod Gervais . This book teaches you how to do all these things, from building a professional home studio to saving thousands of dollars in the process.